diff --git a/src/OpenClaw.Tray.WinUI/Services/DeepLinkHandler.cs b/src/OpenClaw.Tray.WinUI/Services/DeepLinkHandler.cs
index cb86790..23109d2 100644
--- a/src/OpenClaw.Tray.WinUI/Services/DeepLinkHandler.cs
+++ b/src/OpenClaw.Tray.WinUI/Services/DeepLinkHandler.cs
@@ -45,19 +45,11 @@ public static class DeepLinkHandler
         }
     }
 
-    private static bool IsPackagedApp()
-    {
-        try
-        {
-            var packageType = Type.GetType("Windows.ApplicationModel.Package, Windows, ContentType=WindowsRuntime");
-            var current = packageType?.GetProperty("Current")?.GetValue(null);
-            return current != null;
-        }
-        catch
-        {
-            return false;
-        }
-    }
+#if OPENCLAW_TRAY_TESTS
+    private static bool IsPackagedApp() => false;
+#else
+    private static bool IsPackagedApp() => OpenClawTray.Helpers.PackageHelper.IsPackaged;
+#endif
 
     public static void Handle(string uri, DeepLinkActions actions)
     {
diff --git a/tests/OpenClaw.Tray.Tests/OpenClaw.Tray.Tests.csproj b/tests/OpenClaw.Tray.Tests/OpenClaw.Tray.Tests.csproj
index 147958a..07ec002 100644
--- a/tests/OpenClaw.Tray.Tests/OpenClaw.Tray.Tests.csproj
+++ b/tests/OpenClaw.Tray.Tests/OpenClaw.Tray.Tests.csproj
@@ -1,5 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+  <PropertyGroup>
+    <DefineConstants>$(DefineConstants);OPENCLAW_TRAY_TESTS</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\OpenClaw.Shared\OpenClaw.Shared.csproj" />
   </ItemGroup>