@@ -41,20 +41,21 @@
  * @param hashClass The class of the hashing algorithm
  * @return A new, autoreleased OFHMAC
  */
 + (instancetype)HMACWithHashClass: (Class <OFCryptoHash>)hashClass;
 
-- init OF_UNAVAILABLE;
+- (instancetype)init OF_UNAVAILABLE;
 
 /*!
  * @brief Initialized an already allocated OFHMAC with the specified hashing
  *	  algorithm.
  *
  * @param hashClass The class of the hashing algorithm
  * @return An initialized OFHMAC
  */
-- initWithHashClass: (Class <OFCryptoHash>)hashClass OF_DESIGNATED_INITIALIZER;
+- (instancetype)initWithHashClass: (Class <OFCryptoHash>)hashClass
+    OF_DESIGNATED_INITIALIZER;
 
 /*!
  * @brief Sets the key for the HMAC.
  *
  * @note This resets the HMAC!