diff --git a/trunk/dist/game/data/xsd/items.xsd b/trunk/dist/game/data/xsd/items.xsd
index 3233b14ff0..f29e549124 100644
--- a/trunk/dist/game/data/xsd/items.xsd
+++ b/trunk/dist/game/data/xsd/items.xsd
@@ -15,6 +15,7 @@
 					<xs:enumeration value="crystal_type" />
 					<xs:enumeration value="damage_range" />
 					<xs:enumeration value="default_action" />
+					<xs:enumeration value="displayId" />
 					<xs:enumeration value="duration" />
 					<xs:enumeration value="element_enabled" />
 					<xs:enumeration value="enchant_enabled" />