@@ -53,9 +53,10 @@
  * @brief Initializes an already allocated condition signal failed exception.
  *
  * @param condition The condition which could not be signaled
  * @return An initialized condition signal failed exception
  */
-- initWithCondition: (nullable OFCondition *)condition;
+- initWithCondition: (nullable OFCondition *)condition
+    OF_DESIGNATED_INITIALIZER;
 @end
 
 OF_ASSUME_NONNULL_END