diff --git a/include/linux/timer.h b/include/linux/timer.h
index cbfb7a3..6abd913 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -274,11 +274,11 @@
 
 extern void add_timer(struct timer_list *timer);
 
+extern int try_to_del_timer_sync(struct timer_list *timer);
+
 #ifdef CONFIG_SMP
-  extern int try_to_del_timer_sync(struct timer_list *timer);
   extern int del_timer_sync(struct timer_list *timer);
 #else
-# define try_to_del_timer_sync(t)	del_timer(t)
 # define del_timer_sync(t)		del_timer(t)
 #endif