diff --git a/src/tracker/grl-tracker-utils.c b/src/tracker/grl-tracker-utils.c
index 87cfe30..2f2fe2e 100644
--- a/src/tracker/grl-tracker-utils.c
+++ b/src/tracker/grl-tracker-utils.c
@@ -193,6 +193,11 @@ grl_tracker_setup_key_mappings (void)
                       "nmm:albumTitle(nmm:musicAlbum(?urn))",
                       "audio");
 
+  insert_key_mapping (GRL_METADATA_KEY_ALBUM_DISC,
+                      NULL,
+                      "nmm:setNumber(nmm:musicAlbumDisc(?urn))",
+                      "audio");
+
   insert_key_mapping (GRL_METADATA_KEY_ARTIST,
                       NULL,
                       "nmm:artistName(nmm:performer(?urn))",
