diff --git a/mopidy/frontends/lastfm.py b/mopidy/frontends/lastfm.py
index 33e724c0..d50f8dd8 100644
--- a/mopidy/frontends/lastfm.py
+++ b/mopidy/frontends/lastfm.py
@@ -74,14 +74,14 @@ class LastfmFrontend(ThreadingActor, BackendListener):
                 pylast.MalformedResponseError, pylast.WSError) as e:
             logger.warning(u'Error submitting playing track to Last.fm: %s', e)
 
-    def stopped_playing(self, track, stop_position):
+    def stopped_playing(self, track, time_position):
         artists = ', '.join([a.name for a in track.artists])
         duration = track.length and track.length // 1000 or 0
-        stop_position = stop_position // 1000
+        time_position = time_position // 1000
         if duration < 30:
             logger.debug(u'Track too short to scrobble. (30s)')
             return
-        if stop_position < duration // 2 and stop_position < 240:
+        if time_position < duration // 2 and time_position < 240:
             logger.debug(
                 u'Track not played long enough to scrobble. (50% or 240s)')
             return
diff --git a/tests/backends/local/playback_test.py b/tests/backends/local/playback_test.py
index 5f80e691..6aec680f 100644
--- a/tests/backends/local/playback_test.py
+++ b/tests/backends/local/playback_test.py
@@ -37,7 +37,7 @@ class LocalPlaybackControllerTest(PlaybackControllerTest, unittest.TestCase):
         self.backend.current_playlist.add(track)
 
     def test_uri_scheme(self):
-        self.assertIn('file', self.backend.uri_schemes)
+        self.assert_('file' in self.backend.uri_schemes)
 
     def test_play_mp3(self):
         self.add_track('blank.mp3')