@@ -29,11 +29,11 @@
 }
 
 /*!
  * The hash which has already been calculated.
  */
-@property (readonly, retain) id object;
+@property (readonly, nonatomic) id object;
 
 /*!
  * @brief Creates a new, autoreleased hash already calculated exception.
  *
  * @param object The hash which has already been calculated