diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 382bb79..f19b00b 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -54,7 +54,7 @@
 #ifdef CONFIG_DEBUG_RT_MUTEXES
 # define __DEBUG_RT_MUTEX_INITIALIZER(mutexname) \
 	, .name = #mutexname, .file = __FILE__, .line = __LINE__
-# define rt_mutex_init(mutex)			__rt_mutex_init(mutex, __FUNCTION__)
+# define rt_mutex_init(mutex)			__rt_mutex_init(mutex, __func__)
  extern void rt_mutex_debug_task_free(struct task_struct *tsk);
 #else
 # define __DEBUG_RT_MUTEX_INITIALIZER(mutexname)