diff --git a/src/Calculator/Views/MainPage.xaml.cpp b/src/Calculator/Views/MainPage.xaml.cpp
index c66e70d9..c55d2126 100644
--- a/src/Calculator/Views/MainPage.xaml.cpp
+++ b/src/Calculator/Views/MainPage.xaml.cpp
@@ -602,7 +602,7 @@ void MainPage::AnnounceCategoryName()
     NarratorNotifier->Announce(announcement);
 }
 
-void MainPage::OnNavItemInvoked(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Microsoft::UI::Xaml::Controls::NavigationViewItemInvokedEventArgs^ e)
+void MainPage::OnNavItemInvoked(MUXC::NavigationView^ /*sender*/, _In_ MUXC::NavigationViewItemInvokedEventArgs^ e)
 {
     auto item = dynamic_cast<MUXC::NavigationViewItem^>(e->InvokedItemContainer);
     if (item != nullptr)
diff --git a/src/Calculator/Views/MainPage.xaml.h b/src/Calculator/Views/MainPage.xaml.h
index ba26160d..795599c2 100644
--- a/src/Calculator/Views/MainPage.xaml.h
+++ b/src/Calculator/Views/MainPage.xaml.h
@@ -52,8 +52,7 @@ namespace CalculatorApp
         void OnNavPaneOpened(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Platform::Object^ args);
         void OnNavPaneClosed(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Platform::Object^ args);
         void OnNavSelectionChanged(_In_ Platform::Object^ sender, _In_ Microsoft::UI::Xaml::Controls::NavigationViewSelectionChangedEventArgs^ e);
-        void OnNavItemInvoked(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Microsoft::UI::Xaml::Controls::NavigationViewItemInvokedEventArgs^ e);
-
+        void OnNavItemInvoked(Microsoft::UI::Xaml::Controls::NavigationView^ /*sender*/, _In_ Microsoft::UI::Xaml::Controls::NavigationViewItemInvokedEventArgs^ e);
 
         void OnAboutButtonClick(_In_ Platform::Object^ sender, _In_ Windows::UI::Xaml::Controls::ItemClickEventArgs^ e);
         void OnAboutFlyoutOpened(_In_ Platform::Object^ sender, _In_ Platform::Object^ e);