diff --git a/StoryCADLib/ViewModels/ShellViewModel.cs b/StoryCADLib/ViewModels/ShellViewModel.cs
index 3a9993e4..f232bd46 100644
--- a/StoryCADLib/ViewModels/ShellViewModel.cs
+++ b/StoryCADLib/ViewModels/ShellViewModel.cs
@@ -335,6 +335,7 @@ public static StoryModel GetModel()
     /// </summary>
     public static void ShowChange()
     {
+        if (Ioc.Default.GetRequiredService<AppState>().StoryCADTestsMode) { return; }
         if (ShellInstance.StoryModel.Changed) { return; }
         ShellInstance.StoryModel.Changed = true;
         ShellInstance.ChangeStatusColor = Colors.Red;