diff --git a/trunk/dist/game/data/xsd/MapRegion.xsd b/trunk/dist/game/data/xsd/MapRegion.xsd
index b169b69387..4210e55b98 100644
--- a/trunk/dist/game/data/xsd/MapRegion.xsd
+++ b/trunk/dist/game/data/xsd/MapRegion.xsd
@@ -32,6 +32,7 @@
 												<xs:enumeration value="HUMAN" />
 												<xs:enumeration value="KAMAEL" />
 												<xs:enumeration value="ORC" />
+												<xs:enumeration value="ERTHEIA" />
 											</xs:restriction>
 										</xs:simpleType>
 									</xs:attribute>