diff --git a/src/core/Microsoft.PowerToys.Settings.UI/ViewModels/FancyZonesViewModel.cs b/src/core/Microsoft.PowerToys.Settings.UI/ViewModels/FancyZonesViewModel.cs
index 4c821a8c2c..1c64d1b0b1 100644
--- a/src/core/Microsoft.PowerToys.Settings.UI/ViewModels/FancyZonesViewModel.cs
+++ b/src/core/Microsoft.PowerToys.Settings.UI/ViewModels/FancyZonesViewModel.cs
@@ -465,9 +465,12 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
         public void RaisePropertyChanged([CallerMemberName] string propertyName = null)
         {
             OnPropertyChanged(propertyName);
-            SndFancyZonesSettings outsettings = new SndFancyZonesSettings(Settings);
-            SndModuleSettings<SndFancyZonesSettings> ipcMessage = new SndModuleSettings<SndFancyZonesSettings>(outsettings);
-            ShellPage.DefaultSndMSGCallback(ipcMessage.ToJsonString());
+            if (ShellPage.DefaultSndMSGCallback != null)
+            {
+                SndFancyZonesSettings outsettings = new SndFancyZonesSettings(Settings);
+                SndModuleSettings<SndFancyZonesSettings> ipcMessage = new SndModuleSettings<SndFancyZonesSettings>(outsettings);
+                ShellPage.DefaultSndMSGCallback(ipcMessage.ToJsonString());
+            }
         }
     }
 }
diff --git a/src/core/Microsoft.PowerToys.Settings.UnitTest/ViewModelTests/FancyZones.cs b/src/core/Microsoft.PowerToys.Settings.UnitTest/ViewModelTests/FancyZones.cs
index f5f3b4b4d3..45e8f2b092 100644
--- a/src/core/Microsoft.PowerToys.Settings.UnitTest/ViewModelTests/FancyZones.cs
+++ b/src/core/Microsoft.PowerToys.Settings.UnitTest/ViewModelTests/FancyZones.cs
@@ -43,6 +43,8 @@ namespace ViewModelTests
             {
                 DeleteFolder(ModuleName);
             }
+
+            ShellPage.DefaultSndMSGCallback = null;
         }
 
         public void DeleteFolder(string powertoy)