diff --git a/docs/plugins/absubmit.rst b/docs/plugins/absubmit.rst
index a22ec8860..9848e5fd3 100644
--- a/docs/plugins/absubmit.rst
+++ b/docs/plugins/absubmit.rst
@@ -21,9 +21,13 @@ To configure the plugin, make a ``absubmit:`` section in your configuration file
 
 - **auto**: Analyze every file on import. Otherwise, you need to use the ``beet absubmit`` command explicitly.
   Default: ``no``
-- **extractor**: The path to the `streaming_extractor_music`_ binary.
+- **extractor**: The absolute path to the `streaming_extractor_music`_ binary.
   Default: search for the program in your ``$PATH``
 
+Notes
+-----
+MusicBrainz track id is needed to use AcousticBrainz. Check the `streaming_extractor_music`_ download page for more information.
+
 .. _streaming_extractor_music: http://acousticbrainz.org/download
 .. _FAQ: http://acousticbrainz.org/faq
 .. _pip: http://www.pip-installer.org/