diff --git a/ha_addon_dev/config.yaml b/ha_addon_dev/config.yaml
index 9b1b0a7..7173c69 100755
--- a/ha_addon_dev/config.yaml
+++ b/ha_addon_dev/config.yaml
@@ -1,6 +1,6 @@
 name: TSUN-Proxy (Dev)
 description: MQTT Proxy for TSUN Photovoltaic Inverters
-version:  0.14.0-dev-2505311826 
+version:  0.14.0-dev-2505311831 
 image: docker.io/sallius/tsun-gen3-addon
 url: https://github.com/s-allius/tsun-gen3-proxy
 slug: tsun-proxy-dev
diff --git a/ha_addon_dev/rootfs/run.sh b/ha_addon_dev/rootfs/run.sh
index 2c306dd..44d3ec3 100755
--- a/ha_addon_dev/rootfs/run.sh
+++ b/ha_addon_dev/rootfs/run.sh
@@ -3,6 +3,7 @@
 echo "Add-on environment started"
 bashio::cache.flush_all
 echo "check for Home Assistant supervisor API"
+MQTT_HOST=""
 if bashio::supervisor.ping; then
     echo "check for Home Assistant MQTT"
     if bashio::services mqtt; then
@@ -10,6 +11,8 @@ if bashio::supervisor.ping; then
         MQTT_PORT=$(bashio::services mqtt "port")
         MQTT_USER=$(bashio::services mqtt "username")
         MQTT_PASSWORD=$(bashio::services mqtt "password")
+    else
+        echo "error Home Assistant service MQTT not available!"
     fi
 else
     echo "error Home Assistant supervisor API not available!"