diff --git a/tests/backends/basetests.py b/tests/backends/basetests.py
index 3b5faac8..fac3927e 100644
--- a/tests/backends/basetests.py
+++ b/tests/backends/basetests.py
@@ -199,7 +199,10 @@ class BasePlaybackControllerTest(object):
         self.backend = self.backend_class()
         self.playback = self.backend.playback
 
-        assert len(self.tracks) >= 3, 'Need at least three tracks to run tests.'
+        assert len(self.tracks) >= 3, \
+            'Need at least three tracks to run tests.'
+        assert self.tracks[0].length >= 2000, \
+            'First song needs to be at least 2000 miliseconds'
 
     def tearDown(self):
         self.backend.destroy()
@@ -534,18 +537,20 @@ class BasePlaybackControllerTest(object):
 
     @populate_playlist
     def test_seek_when_playing(self):
+        length = self.backend.current_playlist.playlist.tracks[0].length
         self.playback.play()
-        self.playback.seek(1000) # FIXME use track.duration
+        self.playback.seek(length - 1000)
         position = self.playback.time_position
-        self.assert_(position >= 990, position)
+        self.assert_(position >= length - 1010, position)
 
     @populate_playlist
     def test_seek_when_paused(self):
+        length = self.backend.current_playlist.playlist.tracks[0].length
         self.playback.play()
         self.playback.pause()
-        self.playback.seek(1000) # FIXME use track.duration
+        self.playback.seek(length - 1000)
         position = self.playback.time_position
-        self.assert_(position >= 990, position)
+        self.assert_(position >= length - 1010, position)
 
     @populate_playlist
     def test_seek_when_paused_triggers_play(self):
diff --git a/tests/backends/gstreamer.py b/tests/backends/gstreamer.py
index e30fc7bc..dd301e7c 100644
--- a/tests/backends/gstreamer.py
+++ b/tests/backends/gstreamer.py
@@ -14,12 +14,12 @@ song = os.path.join(folder, 'song%s.mp3')
 song = 'file://' + song
 
 class GStreamerCurrentPlaylistHandlerTest(BaseCurrentPlaylistControllerTest, unittest.TestCase):
-    tracks = [Track(uri=song % i, id=i) for i in range(1, 4)]
+    tracks = [Track(uri=song % i, id=i, length=4464) for i in range(1, 4)]
 
     backend_class = GStreamerBackend
 
 class GStreamerPlaybackControllerTest(BasePlaybackControllerTest, unittest.TestCase):
-    tracks = [Track(uri=song % i, id=i) for i in range(1, 4)]
+    tracks = [Track(uri=song % i, id=i, length=4464) for i in range(1, 4)]
 
     backend_class = GStreamerBackend
     supports_volume = True