diff --git a/bsp/src/bsp_ml307.c b/bsp/src/bsp_ml307.c
index 03ab2cb..63e95a4 100644
--- a/bsp/src/bsp_ml307.c
+++ b/bsp/src/bsp_ml307.c
@@ -1827,10 +1827,10 @@ static void Ml307_Life_Thread_Entry(void *parameter)
                             goto __exit;
                         }
                          /* Define PDP Context */
-                         rt_uint8_t  i = 0,
+                         rt_uint8_t  i = 0;
                         for (i = 0; i < 5; i++)
                         {
-                            if (at_obj_exec_cmd(client, resp, "AT+CGDCONT=1,\"IPV4V6\",\"cmnet\"") == RT_EOK)
+                            if (at_obj_exec_cmd(device->client, resp, "AT+CGDCONT=1,\"IPV4V6\",\"cmnet\"") == RT_EOK)
                             {
                                 LOG_D("%s device Define PDP Context Success.", device->name);
                                 break;