diff --git a/weboob/backends/arte/backend.py b/weboob/backends/arte/backend.py
index 45365fb4..92c60873 100644
--- a/weboob/backends/arte/backend.py
+++ b/weboob/backends/arte/backend.py
@@ -59,7 +59,7 @@ class ArteBackend(BaseBackend, ICapVideo):
             # if we don't want only the thumbnail, we probably want also every fields
             with self.browser:
                 video = self.browser.get_video(ArteVideo.id2url(video.id), video)
-        if 'thumbnail' in fields:
+        if 'thumbnail' in fields and video.thumbnail:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)
 
diff --git a/weboob/backends/canalplus/backend.py b/weboob/backends/canalplus/backend.py
index a1def390..a1df403c 100644
--- a/weboob/backends/canalplus/backend.py
+++ b/weboob/backends/canalplus/backend.py
@@ -59,7 +59,7 @@ class CanalplusBackend(BaseBackend, ICapVideo, ICapCollection):
             # if we don't want only the thumbnail, we probably want also every fields
             with self.browser:
                 video = self.browser.get_video(CanalplusVideo.id2url(video.id), video)
-        if 'thumbnail' in fields:
+        if 'thumbnail' in fields and video.thumbnail:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)
         return video
diff --git a/weboob/backends/dailymotion/backend.py b/weboob/backends/dailymotion/backend.py
index 9c7655e5..0e89960c 100644
--- a/weboob/backends/dailymotion/backend.py
+++ b/weboob/backends/dailymotion/backend.py
@@ -53,7 +53,7 @@ class DailymotionBackend(BaseBackend, ICapVideo):
             # if we don't want only the thumbnail, we probably want also every fields
             with self.browser:
                 video = self.browser.get_video(DailymotionVideo.id2url(video.id), video)
-        if 'thumbnail' in fields:
+        if 'thumbnail' in fields and video.thumbnail:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)
 
diff --git a/weboob/backends/ina/backend.py b/weboob/backends/ina/backend.py
index 8f301d04..ec8ca340 100644
--- a/weboob/backends/ina/backend.py
+++ b/weboob/backends/ina/backend.py
@@ -51,7 +51,7 @@ class InaBackend(BaseBackend, ICapVideo):
             # if we don't want only the thumbnail, we probably want also every fields
             with self.browser:
                 video = self.browser.get_video(video.id, video)
-        if 'thumbnail' in fields:
+        if 'thumbnail' in fields and video.thumbnail:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)
 
diff --git a/weboob/backends/kickass/browser.py b/weboob/backends/kickass/browser.py
index 4af6b395..56b51558 100644
--- a/weboob/backends/kickass/browser.py
+++ b/weboob/backends/kickass/browser.py
@@ -32,8 +32,8 @@ class KickassBrowser(BaseBrowser):
     ENCODING = 'utf-8'
     USER_AGENT = BaseBrowser.USER_AGENTS['wget']
     PAGES = {
-        'http://fr.kickasstorrents.com/new/.*field=seeders&sorder=desc': TorrentsPage,
-        'http://fr.kickasstorrents.com/.*.html': TorrentPage,
+        'http://fr.(kickasstorrents.com|kat.ph)/new/.*field=seeders&sorder=desc': TorrentsPage,
+        'http://fr.(kickasstorrents.com|kat.ph)/.*.html': TorrentPage,
         }
 
     def home(self):
diff --git a/weboob/backends/youjizz/backend.py b/weboob/backends/youjizz/backend.py
index a2a21387..a0daa9ee 100644
--- a/weboob/backends/youjizz/backend.py
+++ b/weboob/backends/youjizz/backend.py
@@ -55,7 +55,7 @@ class YoujizzBackend(BaseBackend, ICapVideo):
             # if we don't want only the thumbnail, we probably want also every fields
             with self.browser:
                 video = self.browser.get_video(YoujizzVideo.id2url(video.id), video)
-        if 'thumbnail' in fields:
+        if 'thumbnail' in fields and video.thumbnail:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)
 
diff --git a/weboob/backends/youporn/backend.py b/weboob/backends/youporn/backend.py
index 2dfee93b..09a1cd78 100644
--- a/weboob/backends/youporn/backend.py
+++ b/weboob/backends/youporn/backend.py
@@ -55,7 +55,7 @@ class YoupornBackend(BaseBackend, ICapVideo):
             # if we don't want only the thumbnail, we probably want also every fields
             with self.browser:
                 video = self.browser.get_video(YoupornVideo.id2url(video.id), video)
-        if 'thumbnail' in fields:
+        if 'thumbnail' in fields and video.thumbnail:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)