diff --git a/pisi-spec.dtd b/pisi-spec.dtd
index 34573db2..9dd53354 100644
--- a/pisi-spec.dtd
+++ b/pisi-spec.dtd
@@ -71,6 +71,7 @@
 	#PCDATA |
 	Name |
 	License |
+	Icon |
 	IsA |
 	PartOf |
 	Summary |