diff --git a/include/rtthread.h b/include/rtthread.h
index f9d0b45e86..f2f4091b8a 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -186,7 +186,6 @@ rt_uint16_t rt_critical_level(void);
 
 #ifdef RT_USING_HOOK
 void rt_scheduler_sethook(void (*hook)(rt_thread_t from, rt_thread_t to));
-void rt_scheduler_switchto_sethook(void (*hook)(struct rt_thread *tid));
 #endif
 
 #ifdef RT_USING_SMP