@@ -32,12 +32,12 @@
 /**
  * \param class_ The class of the object which caused the exception
  * \param version The version which is unsupported
  * \return A new unsupported version exception
  */
-+ exceptionWithClass: (Class)class_
-	     version: (OFString*)version;
++ (instancetype)exceptionWithClass: (Class)class_
+			   version: (OFString*)version;
 
 /**
  * Initializes an already allocated unsupported protocol exception
  *
  * \param class_ The class of the object which caused the exception