@@ -50,11 +50,11 @@
 
 	version = [root attributeForName: @"version"].stringValue;
 	if (version == nil)
 		@throw [OFInvalidArgumentException exception];
 
-	if (version.decimalValue != 1)
+	if (version.unsignedLongLongValue != 1)
 		@throw [OFUnsupportedVersionException
 		    exceptionWithVersion: version];
 
 	elements = [root elementsForNamespace: OF_SERIALIZATION_NS];