@@ -332,11 +332,11 @@
  */
 @protocol OFCopying
 /**
  * \return A copy of the object
  */
-- (id)copy;
+- copy;
 @end
 
 /**
  * \brief A protocol for the creation of mutable copies.
  *
@@ -345,9 +345,9 @@
  */
 @protocol OFMutableCopying
 /**
  * \return A copy of the object
  */
-- (id)mutableCopy;
+- mutableCopy;
 @end
 
 extern size_t of_pagesize;