diff --git a/README_SMARTPL.md b/README_SMARTPL.md
index 541194a9..035a8df7 100644
--- a/README_SMARTPL.md
+++ b/README_SMARTPL.md
@@ -40,6 +40,7 @@ Where valid field-names (with there types) are:
 * year (integer)
 * compilation (integer)
 * time_added (date)
+* time_modified (date)
 * time_played (date)
 
 Valid operators include:
diff --git a/src/SMARTPL.g b/src/SMARTPL.g
index 65b457aa..1bbd1792 100644
--- a/src/SMARTPL.g
+++ b/src/SMARTPL.g
@@ -71,6 +71,7 @@ INTTAG		:	'play_count'
 			;
 
 DATETAG		:	'time_added'
+			|	'time_modified'
 			|	'time_played'
 			;