diff --git a/components/drivers/watchdog/watchdog.c b/components/drivers/watchdog/watchdog.c
index 196f02039d..09a6bf4fad 100644
--- a/components/drivers/watchdog/watchdog.c
+++ b/components/drivers/watchdog/watchdog.c
@@ -14,7 +14,7 @@
 /* RT-Thread Device Interface */
 
 /*
- * This function initializes serial
+ * This function initializes watchdog
  */
 static rt_err_t rt_watchdog_init(struct rt_device *dev)
 {