diff --git a/app/Input/InputDispatcher.cs b/app/Input/InputDispatcher.cs
index d1eccca1..8016ef51 100644
--- a/app/Input/InputDispatcher.cs
+++ b/app/Input/InputDispatcher.cs
@@ -977,7 +977,7 @@ namespace GHelper.Input
             }
             else
             {
-                brightness = Math.Max(Math.Min(100, brightness + delta), -10);
+                brightness = Math.Max(Math.Min(100, brightness + delta), 0);
             }
 
             AppConfig.Set("screenpad", brightness);