diff --git a/README_SMARTPL.md b/README_SMARTPL.md
index 5d561512..c64b6f35 100644
--- a/README_SMARTPL.md
+++ b/README_SMARTPL.md
@@ -32,6 +32,7 @@ Where valid field-names (with there types) are:
 * composer (string)
 * path (string)
 * type (string)
+* grouping (string)
 * data_kind (enumeration)
 * media_kind (enumeration)
 * play_count (integer)
diff --git a/src/SMARTPL.g b/src/SMARTPL.g
index 4a023060..65b457aa 100644
--- a/src/SMARTPL.g
+++ b/src/SMARTPL.g
@@ -61,6 +61,7 @@ STRTAG		:	'artist'
 			|	'composer'
 			|	'path'
 			|	'type'
+			|	'grouping'
 			;
 
 INTTAG		:	'play_count'