@@ -47,9 +47,9 @@
  * @brief Initializes an already allocated initialization failed exception.
  *
  * @param class_ The class for which initialization failed
  * @return An initialized initialization failed exception
  */
-- initWithClass: (nullable Class)class_;
+- initWithClass: (nullable Class)class_ OF_DESIGNATED_INITIALIZER;
 @end
 
 OF_ASSUME_NONNULL_END