@@ -28,11 +28,11 @@
  */
 @interface OFMutex: OFObject <OFLocking>
 {
 	of_mutex_t _mutex;
 	bool _initialized;
-	OFString *_name;
+	OFString *_Nullable _name;
 }
 
 /*!
  * @brief Creates a new mutex.
  *