diff --git a/beets/autotag/hooks.py b/beets/autotag/hooks.py
index 8c144cf0c..d15cba269 100644
--- a/beets/autotag/hooks.py
+++ b/beets/autotag/hooks.py
@@ -66,7 +66,8 @@ class AlbumInfo(object):
     - ``albumstatus``: MusicBrainz release status (Official, etc.)
     - ``media``: delivery mechanism (Vinyl, etc.)
     - ``albumdisambig``: MusicBrainz release disambiguation comment
-    - ``releasegroupdisambig``: MusicBrainz release group disambiguation comment
+    - ``releasegroupdisambig``: MusicBrainz release group
+            disambiguation comment.
     - ``artist_credit``: Release-specific artist name
     - ``data_source``: The original data source (MusicBrainz, Discogs, etc.)
     - ``data_url``: The data source release URL.
diff --git a/beets/autotag/mb.py b/beets/autotag/mb.py
index e1cb1164a..4ea56af7f 100644
--- a/beets/autotag/mb.py
+++ b/beets/autotag/mb.py
@@ -346,6 +346,7 @@ def album_info(release):
     info.releasegroup_id = release['release-group']['id']
     info.albumstatus = release.get('status')
 
+    # Get the disambiguation strings at the release and release group level.
     if release['release-group'].get('disambiguation'):
         info.releasegroupdisambig = \
             release['release-group'].get('disambiguation')