diff --git a/custom_components/midea_meiju_codec/core/lua_runtime.py b/custom_components/midea_meiju_codec/core/lua_runtime.py
index 28c1f44..a051ae9 100644
--- a/custom_components/midea_meiju_codec/core/lua_runtime.py
+++ b/custom_components/midea_meiju_codec/core/lua_runtime.py
@@ -37,7 +37,7 @@ class MideaCodec(LuaRuntime):
         if self._sn is not None:
             device_info["deviceSN"] = self._sn
         if self._sub_type is not None:
-            device_info["deviceSN"] = self._sub_type
+            device_info["deviceSubType"] = self._sub_type
         base_dict = {
             "deviceinfo": device_info
         }