diff --git a/src/W800_SDK_v1.00.10/app/ble/ble_service.c b/src/W800_SDK_v1.00.10/app/ble/ble_service.c
index 9c9377f..58f2610 100644
--- a/src/W800_SDK_v1.00.10/app/ble/ble_service.c
+++ b/src/W800_SDK_v1.00.10/app/ble/ble_service.c
@@ -695,7 +695,7 @@ static int ble_gap_event_cb(struct ble_gap_event *event, void *arg)
                 else
                 {
                     TLS_BT_APPL_TRACE_VERBOSE("last data chunk sent, end of the transfer"NEW_LINE);
-                    // All data has been sent, end of the transfer
+                    // All data have been sent, end of the transfer
                     reset_data_being_sent(&notification_data);
                 }
             }
@@ -741,8 +741,7 @@ static int battery_level_char_access_cb(uint16_t conn_handle, uint16_t attr_hand
 
 static int gatt_nus_char_access_cb(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
 {
-    TLS_BT_APPL_TRACE_EVENT("gatt_nus_char_access_cb op : %s"NEW_LINE, tls_bt_access_opt_2_str(ctxt->op));
-    
+    //TLS_BT_APPL_TRACE_EVENT("gatt_nus_char_access_cb op : %s"NEW_LINE, tls_bt_access_opt_2_str(ctxt->op));
     switch(ctxt->op)
     {
         case BLE_GATT_ACCESS_OP_WRITE_CHR: