@@ -24,10 +24,11 @@
  * @brief An exception indicating that a checksum did not match.
  */
 @interface OFChecksumMismatchException: OFException
 {
 	OFString *_actualChecksum, *_expectedChecksum;
+	OF_RESERVE_IVARS(OFChecksumMismatchException, 4)
 }
 
 /**
  * @brief The actual checksum calculated.
  */