diff --git a/components/drivers/can/can.c b/components/drivers/can/can.c
index bbd1e2dcf6..000745514c 100644
--- a/components/drivers/can/can.c
+++ b/components/drivers/can/can.c
@@ -490,7 +490,7 @@ static rt_size_t rt_can_write(struct rt_device *dev,
 }
 
 static rt_err_t rt_can_control(struct rt_device *dev,
-                               rt_uint8_t        cmd,
+                               int              cmd,
                                void             *args)
 {
     struct rt_can_device *can;