diff --git a/MCPForUnity/Editor/Windows/MCPSetupWindow.cs b/MCPForUnity/Editor/Windows/MCPSetupWindow.cs
index 8cf5a01..def559d 100644
--- a/MCPForUnity/Editor/Windows/MCPSetupWindow.cs
+++ b/MCPForUnity/Editor/Windows/MCPSetupWindow.cs
@@ -97,6 +97,7 @@ namespace MCPForUnity.Editor.Windows
 
         private void OnDoneClicked()
         {
+            Setup.SetupWindowService.MarkSetupCompleted();
             Close();
         }