Index: trunk/data/maps.xsd
===================================================================
--- trunk/data/maps.xsd	(revision 8349)
+++ trunk/data/maps.xsd	(revision 8350)
@@ -668,4 +668,5 @@
 										<xs:element name="min-zoom" minOccurs="0" maxOccurs="1" type="tns:zoom" />
 										<xs:element name="max-zoom" minOccurs="0" maxOccurs="1" type="tns:zoom" />
+										<xs:element name="tile-size" minOccurs="0" maxOccurs="1" type="xs:positiveInteger" />
 									</xs:all>
 								</xs:complexType>