diff --git a/docs/settings.rst b/docs/settings.rst
index c657e0bf..afdd39dc 100644
--- a/docs/settings.rst
+++ b/docs/settings.rst
@@ -47,7 +47,9 @@ Scrobbling tracks to Last.fm
 ============================
 
 If you want to submit the tracks you are playing to your `Last.fm
-<http://www.last.fm/>`_ profile, add the following to your settings file::
+<http://www.last.fm/>`_ profile, make sure you've installed the dependencies
+found at :mod:`mopidy.frontends.lastfm` and add the following to your settings
+file::
 
     LASTFM_USERNAME = u'myusername'
     LASTFM_PASSWORD = u'mysecret'
diff --git a/mopidy/frontends/lastfm.py b/mopidy/frontends/lastfm.py
index 998d8ec1..3cab010a 100644
--- a/mopidy/frontends/lastfm.py
+++ b/mopidy/frontends/lastfm.py
@@ -22,7 +22,12 @@ ENCODING = u'utf-8'
 
 class LastfmFrontend(BaseFrontend):
     """
-    Frontend which scrobbles the music you plays to your Last.fm profile.
+    Frontend which scrobbles the music you play to your `Last.fm
+    <http://www.last.fm>`_ profile.
+
+    .. note::
+
+        This frontend requires a free user account at Last.fm.
 
     **Dependencies:**