diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_wdt.c b/bsp/stm32/libraries/HAL_Drivers/drv_wdt.c
index 18b170c42c..dad7db9be4 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_wdt.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_wdt.c
@@ -90,7 +90,9 @@ static rt_err_t wdt_control(rt_watchdog_t *wdt, int cmd, void *arg)
             return -RT_ERROR;
         }
         stm32_wdt.is_start = 1;
+        break;
     default:
+        LOG_W("This command is not supported.");
         return -RT_ERROR;
     }
     return RT_EOK;