diff --git a/kernel/mutex.h b/kernel/mutex.h
index 00fe84e..0691899 100644
--- a/kernel/mutex.h
+++ b/kernel/mutex.h
@@ -9,8 +9,10 @@
  * !CONFIG_DEBUG_MUTEXES case. Most of them are NOPs:
  */
 
-#define spin_lock_mutex(lock)			spin_lock(lock)
-#define spin_unlock_mutex(lock)			spin_unlock(lock)
+#define spin_lock_mutex(lock, flags) \
+		do { spin_lock(lock); (void)(flags); } while (0)
+#define spin_unlock_mutex(lock, flags) \
+		do { spin_unlock(lock); (void)(flags); } while (0)
 #define mutex_remove_waiter(lock, waiter, ti) \
 		__list_del((waiter)->list.prev, (waiter)->list.next)