diff --git a/ems_c/bsp/bsp_mqttClient.c b/ems_c/bsp/bsp_mqttClient.c
index 2b5e682..bc9a651 100644
--- a/ems_c/bsp/bsp_mqttClient.c
+++ b/ems_c/bsp/bsp_mqttClient.c
@@ -1548,8 +1548,6 @@ char *devTypeToString(dev_type_e type)
     case kDev_Type_WaterThsensor:
         str = "wlsd";
         break;
-    case kDev_Type_Reserve1:
-        str = "Reserve1";
     case kDev_Type_Reserve2:
         str = "Reserve2";
         break;