diff --git a/source/Core/BSP/Pinecilv2/bl_mcu_sdk/components/ble/ble_stack/host/gatt.c b/source/Core/BSP/Pinecilv2/bl_mcu_sdk/components/ble/ble_stack/host/gatt.c
index ef9856cb..b972b7d6 100644
--- a/source/Core/BSP/Pinecilv2/bl_mcu_sdk/components/ble/ble_stack/host/gatt.c
+++ b/source/Core/BSP/Pinecilv2/bl_mcu_sdk/components/ble/ble_stack/host/gatt.c
@@ -1686,7 +1686,7 @@ static u8_t match_uuid(const struct bt_gatt_attr *attr, void *user_data) {
 int bt_gatt_notify_cb(struct bt_conn *conn, struct bt_gatt_notify_params *params) {
   struct notify_data         data;
   const struct bt_gatt_attr *attr;
-  u16_t                      handle;
+  u16_t                      handle = 0;
 
   __ASSERT(params, "invalid parameters\n");
   __ASSERT(params->attr, "invalid parameters\n");