diff --git a/bsp/stm32f40x/rtconfig.h b/bsp/stm32f40x/rtconfig.h
index 64cc047ad83495dbdd2f7bb7f25487a3412dd846..9c347969b2c404f3d63a152ee13cf2e23b79b39f 100644
--- a/bsp/stm32f40x/rtconfig.h
+++ b/bsp/stm32f40x/rtconfig.h
@@ -32,7 +32,6 @@
 /* #define RT_USING_TIMER_SOFT */
 #define RT_TIMER_THREAD_PRIO		4
 #define RT_TIMER_THREAD_STACK_SIZE	512
-#define RT_TIMER_TICK_PER_SECOND	10
 
 /* SECTION: IPC */
 /* Using Semaphore*/