diff --git a/enedisgateway2mqtt_test/config.json b/enedisgateway2mqtt_test/config.json
index 9fafbbeb1..a3110ab03 100644
--- a/enedisgateway2mqtt_test/config.json
+++ b/enedisgateway2mqtt_test/config.json
@@ -7,7 +7,8 @@
     "CONFIG_LOCATION": "/config/enedisgateway2mqtt/config.yaml"
   },
   "schema": {
-    "CONFIG_LOCATION": "str"
+    "CONFIG_LOCATION": "str", 
+    "TZ": "str?"
   },
   "slug": "enedisgateway2mqtt_test",
   "upstream": "0.7.1",