@@ -125,9 +125,9 @@
  * @param errNo The errno of the error that occurred
  * @return An initialized open item failed exception
  */
 - initWithPath: (OFString *)path
 	  mode: (nullable OFString *)mode
-	 errNo: (int)errNo;
+	 errNo: (int)errNo OF_DESIGNATED_INITIALIZER;
 @end
 
 OF_ASSUME_NONNULL_END