@@ -25,10 +25,11 @@
  * @brief An exception indicating that the hash has already been calculated.
  */
 @interface OFHashAlreadyCalculatedException: OFException
 {
 	id _object;
+	OF_RESERVE_IVARS(OFHashAlreadyCalculatedException, 4)
 }
 
 /**
  * @brief The hash which has already been calculated.
  */