diff --git a/docs/source/guides/module.rst b/docs/source/guides/module.rst
index ae14bd17..58d05c80 100644
--- a/docs/source/guides/module.rst
+++ b/docs/source/guides/module.rst
@@ -19,7 +19,7 @@ Select capabilities
 *******************
 
 Each module implements one or many :doc:`capabilities </api/capabilities/index>` to tell what kind of features the
-website provides. A capability is a class derived from :class:`weboob.capabilities.base.IBaseCap` and with some abstract
+website provides. A capability is a class derived from :class:`weboob.capabilities.base.CapBase` and with some abstract
 methods (which raise ``NotImplementedError``).
 
 A capability needs to be as generic as possible to allow a maximum number of modules to implements it.
diff --git a/weboob/capabilities/__init__.py b/weboob/capabilities/__init__.py
index 282cae76..85582911 100644
--- a/weboob/capabilities/__init__.py
+++ b/weboob/capabilities/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from .base import UserError, NotLoaded, NotAvailable, BaseObject, IBaseCap
+from .base import UserError, NotLoaded, NotAvailable, BaseObject, CapBase
 
-__all__ = ['UserError', 'NotLoaded', 'NotAvailable', 'BaseObject', 'IBaseCap']
+__all__ = ['UserError', 'NotLoaded', 'NotAvailable', 'BaseObject', 'CapBase']
diff --git a/weboob/capabilities/account.py b/weboob/capabilities/account.py
index e2762b15..b814222a 100644
--- a/weboob/capabilities/account.py
+++ b/weboob/capabilities/account.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, Field, UserError
+from .base import CapBase, BaseObject, StringField, Field, UserError
 
 
 __all__ = ['AccountRegisterError', 'Account', 'StatusField', 'CapAccount']
@@ -56,7 +56,7 @@ class StatusField(object):
         self.flags = flags
 
 
-class CapAccount(IBaseCap):
+class CapAccount(CapBase):
     """
     Capability for websites when you can create and manage accounts.
 
diff --git a/weboob/capabilities/base.py b/weboob/capabilities/base.py
index 5ffc4b04..ba0dc48b 100644
--- a/weboob/capabilities/base.py
+++ b/weboob/capabilities/base.py
@@ -29,7 +29,7 @@ from weboob.tools.ordereddict import OrderedDict
 
 
 __all__ = ['UserError', 'FieldNotFound', 'NotAvailable',
-           'NotLoaded', 'IBaseCap', 'Field', 'IntField', 'DecimalField',
+           'NotLoaded', 'CapBase', 'Field', 'IntField', 'DecimalField',
            'FloatField', 'StringField', 'BytesField',
            'empty', 'BaseObject']
 
@@ -146,7 +146,7 @@ class NotLoadedType(object):
 NotLoaded = NotLoadedType()
 
 
-class IBaseCap(object):
+class CapBase(object):
     """
     This is the base class for all capabilities.
 
diff --git a/weboob/capabilities/bugtracker.py b/weboob/capabilities/bugtracker.py
index f668a0aa..424afafa 100644
--- a/weboob/capabilities/bugtracker.py
+++ b/weboob/capabilities/bugtracker.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, StringField,\
+from .base import CapBase, BaseObject, Field, StringField,\
                   IntField, UserError
 from .date import DateField, DeltaField
 
@@ -232,7 +232,7 @@ class Query(BaseObject):
         BaseObject.__init__(self, '')
 
 
-class CapBugTracker(IBaseCap):
+class CapBugTracker(CapBase):
     """
     Bug trackers websites.
     """
diff --git a/weboob/capabilities/chat.py b/weboob/capabilities/chat.py
index affd82ce..3b0216c8 100644
--- a/weboob/capabilities/chat.py
+++ b/weboob/capabilities/chat.py
@@ -20,7 +20,7 @@
 
 import datetime
 
-from .base import IBaseCap, BaseObject, StringField, UserError
+from .base import CapBase, BaseObject, StringField, UserError
 from .date import DateField
 
 
@@ -53,7 +53,7 @@ class ChatMessage(BaseObject):
             self.date = datetime.datetime.utcnow()
 
 
-class CapChat(IBaseCap):
+class CapChat(CapBase):
     """
     Websites with a chat system.
     """
diff --git a/weboob/capabilities/cinema.py b/weboob/capabilities/cinema.py
index 8e166cdf..4b83fe8c 100644
--- a/weboob/capabilities/cinema.py
+++ b/weboob/capabilities/cinema.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, IntField, Field
+from .base import CapBase, BaseObject, StringField, IntField, Field
 from .date import DateField
 
 
@@ -69,7 +69,7 @@ class Person(BaseObject):
         self.name = name
 
 
-class CapCinema(IBaseCap):
+class CapCinema(CapBase):
     """
     Cinema databases.
     """
diff --git a/weboob/capabilities/collection.py b/weboob/capabilities/collection.py
index 0aa98529..c2ec4f53 100644
--- a/weboob/capabilities/collection.py
+++ b/weboob/capabilities/collection.py
@@ -19,7 +19,7 @@
 
 from weboob.tools.ordereddict import OrderedDict
 
-from .base import IBaseCap, BaseObject, UserError, StringField, Field
+from .base import CapBase, BaseObject, UserError, StringField, Field
 
 
 __all__ = ['CapCollection', 'BaseCollection', 'Collection', 'CollectionNotFound']
@@ -95,7 +95,7 @@ class Collection(BaseCollection):
             return u'Unknown collection'
 
 
-class CapCollection(IBaseCap):
+class CapCollection(CapBase):
     def iter_resources_flat(self, objs, split_path, clean_only=False):
         """
         Call iter_resources() to fetch all resources in the tree.
diff --git a/weboob/capabilities/contact.py b/weboob/capabilities/contact.py
index f1f7c8a0..0051b09f 100644
--- a/weboob/capabilities/contact.py
+++ b/weboob/capabilities/contact.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, StringField, BytesField, IntField, \
+from .base import CapBase, BaseObject, Field, StringField, BytesField, IntField, \
                   UserError
 from weboob.tools.ordereddict import OrderedDict
 
@@ -165,7 +165,7 @@ class Query(BaseObject):
         self.message = message
 
 
-class CapContact(IBaseCap):
+class CapContact(CapBase):
     def iter_contacts(self, status=Contact.STATUS_ALL, ids=None):
         """
         Iter contacts
diff --git a/weboob/capabilities/content.py b/weboob/capabilities/content.py
index 8eddcbd7..0c3bf8d4 100644
--- a/weboob/capabilities/content.py
+++ b/weboob/capabilities/content.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, Field
+from .base import CapBase, BaseObject, StringField, Field
 from .date import DateField
 
 
@@ -45,7 +45,7 @@ class Revision(BaseObject):
     minor =         Field('Is this change minor?', bool)
 
 
-class CapContent(IBaseCap):
+class CapContent(CapBase):
     def get_content(self, id, revision=None):
         """
         Get a content from an ID.
diff --git a/weboob/capabilities/dating.py b/weboob/capabilities/dating.py
index 0be1c9dd..7b3e2207 100644
--- a/weboob/capabilities/dating.py
+++ b/weboob/capabilities/dating.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, StringField, UserError
+from .base import CapBase, BaseObject, Field, StringField, UserError
 from .date import DateField
 from .contact import Contact
 
@@ -90,7 +90,7 @@ class Event(BaseObject):
     message =   StringField('Message of the event')
 
 
-class CapDating(IBaseCap):
+class CapDating(CapBase):
     """
     Capability for dating websites.
     """
diff --git a/weboob/capabilities/file.py b/weboob/capabilities/file.py
index 0e0e7980..bbc9f707 100644
--- a/weboob/capabilities/file.py
+++ b/weboob/capabilities/file.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, NotAvailable, Field, StringField
+from .base import CapBase, BaseObject, NotAvailable, Field, StringField
 from .date import DateField
 
 
@@ -60,7 +60,7 @@ class BaseFile(BaseObject):
         return self.id2url(self.id)
 
 
-class CapFile(IBaseCap):
+class CapFile(CapBase):
     """
     Provide file download
     """
diff --git a/weboob/capabilities/gallery.py b/weboob/capabilities/gallery.py
index bab5377f..6098f422 100644
--- a/weboob/capabilities/gallery.py
+++ b/weboob/capabilities/gallery.py
@@ -19,7 +19,7 @@
 
 
 from weboob.tools.capabilities.thumbnail import Thumbnail
-from .base import IBaseCap, BaseObject, NotLoaded, Field, StringField, \
+from .base import CapBase, BaseObject, NotLoaded, Field, StringField, \
                   BytesField, IntField, FloatField
 from .date import DateField
 
@@ -104,7 +104,7 @@ class BaseImage(BaseObject):
         return self.data is not NotLoaded
 
 
-class CapGallery(IBaseCap):
+class CapGallery(CapBase):
     """
     This capability represents the ability for a website backend to provide videos.
     """
diff --git a/weboob/capabilities/gauge.py b/weboob/capabilities/gauge.py
index f73fb03b..ad7ef0ef 100644
--- a/weboob/capabilities/gauge.py
+++ b/weboob/capabilities/gauge.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, FloatField, Field, UserError, empty
+from .base import CapBase, BaseObject, StringField, FloatField, Field, UserError, empty
 from .date import DateField
 
 __all__ = ['Gauge', 'GaugeSensor', 'GaugeMeasure', 'CapGauge', 'SensorNotFound']
@@ -74,7 +74,7 @@ class GaugeSensor(BaseObject):
         return "<GaugeSensor id=%s name=%s>" % (self.id, self.name)
 
 
-class CapGauge(IBaseCap):
+class CapGauge(CapBase):
     def iter_gauges(self, pattern=None):
         """
         Iter gauges.
diff --git a/weboob/capabilities/geolocip.py b/weboob/capabilities/geolocip.py
index 2512c7f5..04499c63 100644
--- a/weboob/capabilities/geolocip.py
+++ b/weboob/capabilities/geolocip.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, FloatField
+from .base import CapBase, BaseObject, StringField, FloatField
 
 
 __all__ = ['IpLocation', 'CapGeolocIp']
@@ -42,7 +42,7 @@ class IpLocation(BaseObject):
         BaseObject.__init__(self, ipaddr)
 
 
-class CapGeolocIp(IBaseCap):
+class CapGeolocIp(CapBase):
     """
     Access information about IP addresses database.
     """
diff --git a/weboob/capabilities/housing.py b/weboob/capabilities/housing.py
index 842b2573..38ec19b7 100644
--- a/weboob/capabilities/housing.py
+++ b/weboob/capabilities/housing.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, IntField, DecimalField, \
+from .base import CapBase, BaseObject, Field, IntField, DecimalField, \
                   StringField, BytesField
 from .date import DateField
 
@@ -89,7 +89,7 @@ class City(BaseObject):
     name =      StringField('Name of city')
 
 
-class CapHousing(IBaseCap):
+class CapHousing(CapBase):
     """
     Capability of websites to search housings.
     """
diff --git a/weboob/capabilities/job.py b/weboob/capabilities/job.py
index 8efe085e..d9721ffb 100644
--- a/weboob/capabilities/job.py
+++ b/weboob/capabilities/job.py
@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
-from .base import BaseObject, IBaseCap, StringField
+from .base import BaseObject, CapBase, StringField
 from .date import DateField
 
 __all__ = ['BaseJobAdvert', 'CapJob']
@@ -68,7 +68,7 @@ class BaseJobAdvert(BaseObject):
         return self.id2url(self.id)
 
 
-class CapJob(IBaseCap):
+class CapJob(CapBase):
     """
     Capability of job annouce websites.
     """
diff --git a/weboob/capabilities/lyrics.py b/weboob/capabilities/lyrics.py
index 98a79090..7951227d 100644
--- a/weboob/capabilities/lyrics.py
+++ b/weboob/capabilities/lyrics.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField
+from .base import CapBase, BaseObject, StringField
 
 
 __all__ = ['SongLyrics', 'CapLyrics']
@@ -37,7 +37,7 @@ class SongLyrics(BaseObject):
         self.title = title
 
 
-class CapLyrics(IBaseCap):
+class CapLyrics(CapBase):
     """
     Lyrics websites.
     """
diff --git a/weboob/capabilities/messages.py b/weboob/capabilities/messages.py
index 0b16fe68..97b1ea70 100644
--- a/weboob/capabilities/messages.py
+++ b/weboob/capabilities/messages.py
@@ -21,7 +21,7 @@
 import datetime
 import time
 
-from .base import IBaseCap, BaseObject, NotLoaded, Field, StringField, \
+from .base import CapBase, BaseObject, NotLoaded, Field, StringField, \
                   IntField, UserError
 from .date import DateField
 
@@ -165,7 +165,7 @@ class Thread(_Thread):
                     yield m
 
 
-class CapMessages(IBaseCap):
+class CapMessages(CapBase):
     """
     Capability to read messages.
     """
@@ -209,7 +209,7 @@ class CantSendMessage(UserError):
     """
 
 
-class CapMessagesPost(IBaseCap):
+class CapMessagesPost(CapBase):
     """
     This capability allow user to send a message.
     """
diff --git a/weboob/capabilities/parcel.py b/weboob/capabilities/parcel.py
index 291be29a..ea483045 100644
--- a/weboob/capabilities/parcel.py
+++ b/weboob/capabilities/parcel.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, StringField
+from .base import CapBase, BaseObject, Field, StringField
 from .date import DateField
 
 
@@ -42,7 +42,7 @@ class Parcel(BaseObject):
     history = Field('History', list)
 
 
-class CapParcel(IBaseCap):
+class CapParcel(CapBase):
     def get_parcel_tracking(self, id):
         """
         Get information abouut a parcel.
diff --git a/weboob/capabilities/paste.py b/weboob/capabilities/paste.py
index 99567e4c..11dfb114 100644
--- a/weboob/capabilities/paste.py
+++ b/weboob/capabilities/paste.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, NotLoaded, Field, StringField, UserError
+from .base import CapBase, BaseObject, NotLoaded, Field, StringField, UserError
 
 
 __all__ = ['PasteNotFound', 'BasePaste', 'CapPaste']
@@ -63,7 +63,7 @@ class BasePaste(BaseObject):
         return self.id2url(self.id)
 
 
-class CapPaste(IBaseCap):
+class CapPaste(CapBase):
     """
     This capability represents the ability for a website backend to store plain text.
     """
diff --git a/weboob/capabilities/pricecomparison.py b/weboob/capabilities/pricecomparison.py
index 4785f942..e67d79da 100644
--- a/weboob/capabilities/pricecomparison.py
+++ b/weboob/capabilities/pricecomparison.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, DecimalField, \
+from .base import CapBase, BaseObject, Field, DecimalField, \
                   StringField
 from .date import DateField
 
@@ -53,7 +53,7 @@ class Price(BaseObject):
     product =   Field('Product', Product)
 
 
-class CapPriceComparison(IBaseCap):
+class CapPriceComparison(CapBase):
     """
     Capability for price comparison websites.
     """
diff --git a/weboob/capabilities/radio.py b/weboob/capabilities/radio.py
index 0a1fbdce..f39ed94f 100644
--- a/weboob/capabilities/radio.py
+++ b/weboob/capabilities/radio.py
@@ -19,7 +19,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, StringField
+from .base import CapBase, BaseObject, Field, StringField
 from weboob.tools.capabilities.streaminfo import StreamInfo
 
 
@@ -35,7 +35,7 @@ class Radio(BaseObject):
     current =       Field('Current emission', StreamInfo)
     streams =       Field('List of streams', list)
 
-class CapRadio(IBaseCap):
+class CapRadio(CapBase):
     """
     Capability of radio websites.
     """
diff --git a/weboob/capabilities/recipe.py b/weboob/capabilities/recipe.py
index a619b454..2bb1473d 100644
--- a/weboob/capabilities/recipe.py
+++ b/weboob/capabilities/recipe.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, IntField, Field, empty
+from .base import CapBase, BaseObject, StringField, IntField, Field, empty
 
 import lxml.etree as ET
 
@@ -161,7 +161,7 @@ class Recipe(BaseObject):
         return header + ET.tostring(doc, encoding='UTF-8', pretty_print=True).decode('utf-8')
 
 
-class CapRecipe(IBaseCap):
+class CapRecipe(CapBase):
     """
     Recipe providers.
     """
diff --git a/weboob/capabilities/subtitle.py b/weboob/capabilities/subtitle.py
index 56ae1042..1f92b322 100644
--- a/weboob/capabilities/subtitle.py
+++ b/weboob/capabilities/subtitle.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, IntField, UserError
+from .base import CapBase, BaseObject, StringField, IntField, UserError
 
 
 __all__ = ['Subtitle', 'CapSubtitle']
@@ -48,7 +48,7 @@ class Subtitle(BaseObject):
         BaseObject.__init__(self, id)
         self.name = name
 
-class CapSubtitle(IBaseCap):
+class CapSubtitle(CapBase):
     """
     Subtitle providers.
     """
diff --git a/weboob/capabilities/torrent.py b/weboob/capabilities/torrent.py
index 25b322e2..43d7579f 100644
--- a/weboob/capabilities/torrent.py
+++ b/weboob/capabilities/torrent.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, Field, StringField, FloatField, \
+from .base import CapBase, BaseObject, Field, StringField, FloatField, \
                   IntField, UserError
 from .date import DateField
 
@@ -54,7 +54,7 @@ class Torrent(BaseObject):
         self.name = name
 
 
-class CapTorrent(IBaseCap):
+class CapTorrent(CapBase):
     """
     Torrent trackers.
     """
diff --git a/weboob/capabilities/translate.py b/weboob/capabilities/translate.py
index 30557ff0..1dd27aca 100644
--- a/weboob/capabilities/translate.py
+++ b/weboob/capabilities/translate.py
@@ -18,7 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-from .base import IBaseCap, BaseObject, StringField, UserError
+from .base import CapBase, BaseObject, StringField, UserError
 
 
 __all__ = ['TranslationFail', 'LanguageNotSupported', 'CapTranslate']
@@ -51,7 +51,7 @@ class Translation(BaseObject):
     text =          StringField('Translation')
 
 
-class CapTranslate(IBaseCap):
+class CapTranslate(CapBase):
     """
     Capability of online translation website to translate word or sentence
     """
diff --git a/weboob/capabilities/travel.py b/weboob/capabilities/travel.py
index 9e756e67..4be332c0 100644
--- a/weboob/capabilities/travel.py
+++ b/weboob/capabilities/travel.py
@@ -20,7 +20,7 @@
 
 import datetime
 
-from .base import IBaseCap, BaseObject, StringField, DecimalField, UserError
+from .base import CapBase, BaseObject, StringField, DecimalField, UserError
 from .date import TimeField, DeltaField, DateField
 
 __all__ = ['Station', 'Departure', 'RoadStep', 'RoadmapError', 'RoadmapFilters', 'CapTravel']
@@ -95,7 +95,7 @@ class RoadmapFilters(BaseObject):
         BaseObject.__init__(self, '')
 
 
-class CapTravel(IBaseCap):
+class CapTravel(CapBase):
     """
     Travel websites.
     """
diff --git a/weboob/capabilities/weather.py b/weboob/capabilities/weather.py
index 37f0bc8e..ee62a1c5 100644
--- a/weboob/capabilities/weather.py
+++ b/weboob/capabilities/weather.py
@@ -20,7 +20,7 @@
 
 from datetime import datetime, date
 
-from .base import IBaseCap, BaseObject, Field, FloatField, \
+from .base import CapBase, BaseObject, Field, FloatField, \
                   StringField, UserError
 from .date import DateField
 
@@ -109,7 +109,7 @@ class CityNotFound(UserError):
     """
 
 
-class CapWeather(IBaseCap):
+class CapWeather(CapBase):
     """
     Capability for weather websites.
     """
diff --git a/weboob/core/ouiboube.py b/weboob/core/ouiboube.py
index 28c3e437..fb4a6f55 100644
--- a/weboob/core/ouiboube.py
+++ b/weboob/core/ouiboube.py
@@ -191,7 +191,7 @@ class WebNip(object):
         Note: each backend is locked when it is returned.
 
         :param caps: optional list of capabilities to select backends
-        :type caps: tuple[:class:`weboob.capabilities.base.IBaseCap`]
+        :type caps: tuple[:class:`weboob.capabilities.base.CapBase`]
         :rtype: iter[:class:`weboob.tools.backend.BaseBackend`]
         """
         for _, backend in sorted(self.backend_instances.iteritems()):
@@ -222,7 +222,7 @@ class WebNip(object):
         :param backends: list of backends to iterate on
         :type backends: list[:class:`str`]
         :param caps: iterate on backends which implement this caps
-        :type caps: list[:class:`weboob.capabilities.base.IBaseCap`]
+        :type caps: list[:class:`weboob.capabilities.base.CapBase`]
         :rtype: A :class:`weboob.core.bcall.BackendsCall` object (iterable)
         """
         backends = self.backend_instances.values()
diff --git a/weboob/tools/backend.py b/weboob/tools/backend.py
index 4ce15756..942d2735 100644
--- a/weboob/tools/backend.py
+++ b/weboob/tools/backend.py
@@ -23,7 +23,7 @@ from threading import RLock
 from copy import copy
 
 from weboob.capabilities.base import BaseObject, FieldNotFound, \
-    IBaseCap, NotLoaded, NotAvailable
+    CapBase, NotLoaded, NotAvailable
 from weboob.tools.misc import iter_fields
 from weboob.tools.log import getLogger
 from weboob.tools.value import ValuesDict
@@ -350,11 +350,11 @@ class BaseBackend(object):
         """
         Iter capabilities implemented by this backend.
 
-        :rtype: iter[:class:`weboob.capabilities.base.IBaseCap`]
+        :rtype: iter[:class:`weboob.capabilities.base.CapBase`]
         """
         def iter_caps(cls):
             for base in cls.__bases__:
-                if issubclass(base, IBaseCap) and base != IBaseCap:
+                if issubclass(base, CapBase) and base != CapBase:
                     yield base
                     for cap in iter_caps(base):
                         yield cap