@@ -73,9 +73,9 @@
  * @param errNo The errno of the error that occurred
  * @return An initialized listen failed exception
  */
 - initWithSocket: (id)socket
 	 backLog: (int)backLog
-	   errNo: (int)errNo;
+	   errNo: (int)errNo OF_DESIGNATED_INITIALIZER;
 @end
 
 OF_ASSUME_NONNULL_END