@@ -27,10 +27,11 @@
  */
 @interface OFUnboundPrefixException: OFException
 {
 	OFString *_prefix;
 	OFXMLParser *_parser;
+	OF_RESERVE_IVARS(OFUnboundPrefixException, 4)
 }
 
 /**
  * @brief The unbound prefix.
  */