diff --git a/plexapi/base.py b/plexapi/base.py
index f6a95923..3bbc6dbc 100644
--- a/plexapi/base.py
+++ b/plexapi/base.py
@@ -445,6 +445,7 @@ class PlexPartialObject(PlexObject):
             self._server.query(key, method=self._server._session.post, data=data)
 
     def setPoster(self, poster):
+        """ Set . :class:`~plexapi.media.Poster` to :class:`~plexapi.video.Video` """
         key = poster._initpath[:-1]
         data = '%s?url=%s' % (key, quote_plus(poster.ratingKey))
         self._server.query(data, method=self._server._session.put)