diff --git a/ble_through/ble_proto.h b/ble_through/ble_proto.h
index 30bbedd..f9ed3e5 100644
--- a/ble_through/ble_proto.h
+++ b/ble_through/ble_proto.h
@@ -102,6 +102,7 @@ typedef struct {
   uint8_t reset_flag;
   uint8_t connected_flag;
   uint8_t power;
+  uint8_t charge_flag;
 } zble_heart_t;
 #pragma pack()