diff --git a/weboob/backends/youjizz/pages/index.py b/weboob/backends/youjizz/pages/index.py
index 80203e6e..250953a3 100644
--- a/weboob/backends/youjizz/pages/index.py
+++ b/weboob/backends/youjizz/pages/index.py
@@ -42,7 +42,7 @@ class IndexPage(BasePage):
             url = a.attrib['href']
             _id = re.sub(r'/videos/(.+)\.html', r'\1', url)
 
-            preview_url = span.find('.//img').attrib['src']
+            thumbnail_url = span.find('.//img').attrib['src']
 
             title1 = span.cssselect('span#title1')
             if title1 is None:
@@ -60,6 +60,6 @@ class IndexPage(BasePage):
             yield Video(_id,
                         title=title,
                         duration=duration,
-                        preview_url=preview_url,
+                        thumbnail_url=thumbnail_url,
                         nsfw=True,
                         id2url=tools.id2url)
diff --git a/weboob/backends/youporn/pages/index.py b/weboob/backends/youporn/pages/index.py
index 39bd25a9..e92bf31f 100644
--- a/weboob/backends/youporn/pages/index.py
+++ b/weboob/backends/youporn/pages/index.py
@@ -39,7 +39,7 @@ class IndexPage(PornPage):
                 if a is None or a.find('img') is None:
                     continue
 
-                preview_url = a.find('img').attrib['src']
+                thumbnail_url = a.find('img').attrib['src']
 
                 h1 = li.find('h1')
                 a = h1.find('a')
@@ -71,6 +71,6 @@ class IndexPage(PornPage):
                             rating=rating,
                             rating_max=rating_max,
                             duration=duration,
-                            preview_url=preview_url,
+                            thumbnail_url=thumbnail_url,
                             nsfw=True,
                             id2url=tools.id2url)
diff --git a/weboob/backends/youtube/backend.py b/weboob/backends/youtube/backend.py
index 9b05532b..7ac09487 100644
--- a/weboob/backends/youtube/backend.py
+++ b/weboob/backends/youtube/backend.py
@@ -78,7 +78,7 @@ class YoutubeBackend(BaseBackend, ICapVideoProvider):
                         title=entry.media.title.text.decode('utf-8').strip(),
                         author=author,
                         duration=int(entry.media.duration.seconds.decode('utf-8').strip()),
-                        preview_url=entry.media.thumbnail[0].url.decode('utf-8').strip(),
+                        thumbnail_url=entry.media.thumbnail[0].url.decode('utf-8').strip(),
                         id2url=tools.id2url)
 
     def iter_page_urls(self, mozaic_url):
diff --git a/weboob/capabilities/video.py b/weboob/capabilities/video.py
index 51d3e0cf..be0536d9 100644
--- a/weboob/capabilities/video.py
+++ b/weboob/capabilities/video.py
@@ -26,7 +26,7 @@ __all__ = ['ICapVideoProvider', 'Video']
 
 class Video(object):
     def __init__(self, _id, title=None, url=None, author=None, duration=0, date=None,
-                 rating=0.0, rating_max=0.0, preview_url=None, nsfw=False, id2url=None):
+                 rating=0.0, rating_max=0.0, thumbnail_url=None, nsfw=False, id2url=None):
         self.id = _id
         self.title = title
         self.url = url
@@ -35,7 +35,7 @@ class Video(object):
         self.date = date
         self.rating = float(rating)
         self.rating_max = float(rating_max)
-        self.preview_url = preview_url
+        self.thumbnail_url = thumbnail_url
         self.nsfw = nsfw
         self.id2url = id2url
 
diff --git a/weboob/frontends/qvideoob/minivideo.py b/weboob/frontends/qvideoob/minivideo.py
index 870e2e9f..23b9c77b 100644
--- a/weboob/frontends/qvideoob/minivideo.py
+++ b/weboob/frontends/qvideoob/minivideo.py
@@ -42,8 +42,8 @@ class MiniVideo(QFrame):
         else:
             self.ui.ratingLabel.setText('%s' % video.rating)
 
-        if video.preview_url:
-            data = urllib2.urlopen(video.preview_url).read()
+        if video.thumbnail_url:
+            data = urllib2.urlopen(video.thumbnail_url).read()
             img = QImage.fromData(data)
             self.ui.imageLabel.setPixmap(QPixmap.fromImage(img))