diff --git a/nspanel-lovelace-ui/config.yaml b/nspanel-lovelace-ui/config.yaml
index d3b56ea3..3b28d444 100644
--- a/nspanel-lovelace-ui/config.yaml
+++ b/nspanel-lovelace-ui/config.yaml
@@ -1,6 +1,6 @@
 # https://developers.home-assistant.io/docs/add-ons/configuration#add-on-config
 name: NSPanel Lovelace UI Addon
-version: "4.7.20"
+version: "4.7.21"
 slug: nspanel-lovelace-ui
 description: NSPanel Lovelace UI Addon
 services:
diff --git a/nspanel-lovelace-ui/rootfs/usr/bin/mqtt-manager/panel.py b/nspanel-lovelace-ui/rootfs/usr/bin/mqtt-manager/panel.py
index 256b8dc0..6c2aacf1 100644
--- a/nspanel-lovelace-ui/rootfs/usr/bin/mqtt-manager/panel.py
+++ b/nspanel-lovelace-ui/rootfs/usr/bin/mqtt-manager/panel.py
@@ -108,7 +108,7 @@ class LovelaceUIPanel:
             return_involved_entities=True
         )
         if entity_id in involved_entities:
-            dimmode()
+            self.dimmode()
 
 
     def render_current_page(self, switchPages=False):
@@ -124,7 +124,7 @@ class LovelaceUIPanel:
         if self.current_card.config.get("sleepTimeout"):
             sleepTimeout = self.current_card.config.get("sleepTimeout")
         libs.panel_cmd.timeout(self.sendTopic, sleepTimeout)
-        dimmode()
+        self.dimmode()
 
     def dimmode():
         # send dimmode