@@ -24,10 +24,11 @@
  * @brief An exception indicating that writing to an object failed.
  */
 @interface OFWriteFailedException: OFReadOrWriteFailedException
 {
 	size_t _bytesWritten;
+	OF_RESERVE_IVARS(OFWriteFailedException, 4)
 }
 
 /**
  * @brief The number of bytes already written before the write failed.
  *