diff --git a/src/Packages/Passport/Runtime/Scripts/Public/Passport.cs b/src/Packages/Passport/Runtime/Scripts/Public/Passport.cs
index 39f5b67a..f7b7dde0 100644
--- a/src/Packages/Passport/Runtime/Scripts/Public/Passport.cs
+++ b/src/Packages/Passport/Runtime/Scripts/Public/Passport.cs
@@ -132,6 +132,7 @@ private void OnQuit()
             // as the child engine process would still be alive
             Debug.Log($"{TAG} Quitting the Player");
             ((WebBrowserClient)webBrowserClient).Dispose();
+            Instance = null;
         }
 #endif