diff --git a/src/Calculator/Views/MainPage.xaml.cpp b/src/Calculator/Views/MainPage.xaml.cpp
index 1872fef8..4cf229be 100644
--- a/src/Calculator/Views/MainPage.xaml.cpp
+++ b/src/Calculator/Views/MainPage.xaml.cpp
@@ -85,7 +85,7 @@ MainPage::MainPage() :
     }    
 }
 
-void MainPage::OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventArgs^ e)
+void MainPage::OnNavigatedTo(NavigationEventArgs^ e)
 {
     if (m_model->CalculatorViewModel)
     {
diff --git a/src/Calculator/Views/MainPage.xaml.h b/src/Calculator/Views/MainPage.xaml.h
index d0218878..4db633e6 100644
--- a/src/Calculator/Views/MainPage.xaml.h
+++ b/src/Calculator/Views/MainPage.xaml.h
@@ -39,7 +39,7 @@ namespace CalculatorApp
         Windows::Foundation::Collections::IObservableVector<Platform::Object^>^ CreateUIElementsForCategories(_In_ Windows::Foundation::Collections::IObservableVector<CalculatorApp::Common::NavCategoryGroup^>^ categories);
 
     protected:
-        virtual void OnNavigatedTo(Windows::UI::Xaml::Navigation::NavigationEventArgs^ e) override;
+        void OnNavigatedTo(_In_ Windows::UI::Xaml::Navigation::NavigationEventArgs^ e) override;
 
     private:
         void WindowSizeChanged(_In_ Platform::Object^ sender, _In_ Windows::UI::Core::WindowSizeChangedEventArgs^ e);