diff --git a/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor b/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor
index b236d3f..9a4a876 100644
--- a/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor
+++ b/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor
@@ -118,7 +118,7 @@ else
                             </div>
                         </div>
                         <div class="row borderBottom">
-                            @if (doCheckVal())
+                            @if (isChangedVal())
                             {
                                 <div class="col-10">
                                     <div class="btn-group w-100">
diff --git a/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs b/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs
index 113e9ce..6cb0572 100644
--- a/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs
+++ b/WebDoorCreator.UI/Components/Hardware/HwSingleInstance.razor.cs
@@ -134,9 +134,9 @@ namespace WebDoorCreator.UI.Components.Hardware
             await FullReloadData();
         }
 
-        protected bool doCheckVal()
+        protected bool isChangedVal()
         {
-            bool answ = DoorOpInst.JsoncActValEquals(currVal);
+            bool answ = !DoorOpInst.JsoncActValEquals(currVal);
             if (answ)
             {
                 DoorOpInst.JsoncActVal = JsonConvert.SerializeObject(currVal);