diff --git a/bsp/acm32/acm32f0x0-nucleo/drivers/drv_pm.c b/bsp/acm32/acm32f0x0-nucleo/drivers/drv_pm.c
index c39190df0b..63150e4063 100644
--- a/bsp/acm32/acm32f0x0-nucleo/drivers/drv_pm.c
+++ b/bsp/acm32/acm32f0x0-nucleo/drivers/drv_pm.c
@@ -135,6 +135,8 @@ static rt_tick_t _pm_timer_get_tick(struct rt_pm *pm)
 {
     rt_tick_t tick;
     RT_ASSERT(pm != RT_NULL);
+    
+    tick = 1;
 
     return get_os_tick_from_pm_tick(tick);
 }