diff --git a/weboob/backends/bnporc/browser.py b/weboob/backends/bnporc/browser.py
index 05bcfea7..6c8701cc 100644
--- a/weboob/backends/bnporc/browser.py
+++ b/weboob/backends/bnporc/browser.py
@@ -41,8 +41,6 @@ class BNPorc(BaseBrowser):
              '.*SAF_CHM_VALID.*':                           pages.ConfirmPage,
             }
 
-    is_logging = False
-
     def __init__(self, *args, **kwargs):
         self.rotating_password = kwargs.pop('rotating_password', None)
         self.password_changed_cb = kwargs.pop('password_changed_cb', None)
@@ -52,7 +50,7 @@ class BNPorc(BaseBrowser):
         self.location('https://www.secure.bnpparibas.net/banque/portail/particulier/HomeConnexion?type=homeconnex')
 
     def is_logged(self):
-        return not self.is_on_page(pages.LoginPage) or self.is_logging
+        return not self.is_on_page(pages.LoginPage)
 
     def login(self):
         assert isinstance(self.username, basestring)
@@ -62,13 +60,11 @@ class BNPorc(BaseBrowser):
         if not self.is_on_page(pages.LoginPage):
             self.location('https://www.secure.bnpparibas.net/banque/portail/particulier/HomeConnexion?type=homeconnex')
 
-        self.is_logging = True
         self.page.login(self.username, self.password)
-        self.location('/NSFR?Action=DSP_VGLOBALE')
+        self.location('/NSFR?Action=DSP_VGLOBALE', no_login=True)
 
         if self.is_on_page(pages.LoginPage):
             raise BrowserIncorrectPassword()
-        self.is_logging = False
 
     def change_password(self, new_password):
         assert new_password.isdigit() and len(new_password) == 6
diff --git a/weboob/backends/bnporc/pages/login.py b/weboob/backends/bnporc/pages/login.py
index a41b9d70..cc79c250 100644
--- a/weboob/backends/bnporc/pages/login.py
+++ b/weboob/backends/bnporc/pages/login.py
@@ -20,7 +20,7 @@ from weboob.tools.mech import ClientForm
 import urllib
 from logging import error
 
-from weboob.tools.browser import BasePage
+from weboob.tools.browser import BasePage, BrowserUnavailable
 from weboob.backends.bnporc.captcha import Captcha, TileError
 
 
@@ -29,7 +29,12 @@ __all__ = ['LoginPage', 'ConfirmPage', 'ChangePasswordPage']
 
 class LoginPage(BasePage):
     def on_loaded(self):
-        pass
+        for td in self.document.getroot().cssselect('td.LibelleErreur'):
+            if td.text is None:
+                continue
+            msg = td.text.strip()
+            if 'indisponible' in msg:
+                raise BrowserUnavailable(msg)
 
     def login(self, login, password):
         img = Captcha(self.browser.openurl('/NSImgGrille'))