@@ -43,17 +43,17 @@
  * @param version The version which is unsupported
  * @return A new, autoreleased unsupported version exception
  */
 + (instancetype)exceptionWithVersion: (OFString *)version;
 
-- init OF_UNAVAILABLE;
+- (instancetype)init OF_UNAVAILABLE;
 
 /*!
  * @brief Initializes an already allocated unsupported protocol exception.
  *
  * @param version The version which is unsupported
  * @return An initialized unsupported version exception
  */
-- initWithVersion: (OFString *)version OF_DESIGNATED_INITIALIZER;
+- (instancetype)initWithVersion: (OFString *)version OF_DESIGNATED_INITIALIZER;
 @end
 
 OF_ASSUME_NONNULL_END