diff --git a/src/CalcViewModel/Common/Automation/NarratorAnnouncement.h b/src/CalcViewModel/Common/Automation/NarratorAnnouncement.h
index 0a5e3758..2e65a700 100644
--- a/src/CalcViewModel/Common/Automation/NarratorAnnouncement.h
+++ b/src/CalcViewModel/Common/Automation/NarratorAnnouncement.h
@@ -57,7 +57,7 @@ namespace CalculatorApp::Common::Automation
     private:
         // Make CalculatorAnnouncement a friend class so it is the only
         // class that can access the private constructor.
-        friend ref class CalculatorAnnouncement;
+        friend class CalculatorAnnouncement;
 
         NarratorAnnouncement(
             Platform::String^ announcement,
@@ -73,7 +73,7 @@ namespace CalculatorApp::Common::Automation
 
     // CalculatorAnnouncement is intended to contain only static methods
     // that return announcements made for the Calculator app.
-    public ref class CalculatorAnnouncement sealed
+    class CalculatorAnnouncement
     {
     public:
         static NarratorAnnouncement^ GetDisplayUpdatedAnnouncement(Platform::String^ announcement);
@@ -88,11 +88,7 @@ namespace CalculatorApp::Common::Automation
         static NarratorAnnouncement^ GetCategoryNameChangedAnnouncement(Platform::String^ announcement);
 
         static NarratorAnnouncement^ GetUpdateCurrencyRatesAnnouncement(Platform::String^ announcement);
-        
+
         static NarratorAnnouncement^ GetDisplayCopiedAnnouncement(Platform::String^ announcement);
-
-    private:
-        CalculatorAnnouncement() { }
     };
-
 }
diff --git a/src/Calculator/Views/DateCalculator.xaml.cpp b/src/Calculator/Views/DateCalculator.xaml.cpp
index 6c19b3ca..14269260 100644
--- a/src/Calculator/Views/DateCalculator.xaml.cpp
+++ b/src/Calculator/Views/DateCalculator.xaml.cpp
@@ -209,7 +209,7 @@ void DateCalculator::ReselectCalendarDate(_In_ Windows::UI::Xaml::Controls::Cale
 
 void DateCalculator::OffsetDropDownClosed(_In_ Object^ sender, _In_ Object^ e)
 {
-    RaiseLiveRegionChangedAutomationEvent(false);
+    RaiseLiveRegionChangedAutomationEvent(/* DateDiff mode */ false);
 }
 
 void DateCalculator::CalendarFlyoutClosed(_In_ Object^ sender, _In_ Object^ e)
@@ -227,5 +227,5 @@ void DateCalculator::RaiseLiveRegionChangedAutomationEvent(_In_ bool isDateDiffM
 
 void CalculatorApp::DateCalculator::AddSubtractOption_Checked(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
 {
-    RaiseLiveRegionChangedAutomationEvent(false);
+    RaiseLiveRegionChangedAutomationEvent(/* DateDiff mode */ false);
 }
diff --git a/src/Calculator/Views/DateCalculator.xaml.h b/src/Calculator/Views/DateCalculator.xaml.h
index 65cdfa6f..3d825d08 100644
--- a/src/Calculator/Views/DateCalculator.xaml.h
+++ b/src/Calculator/Views/DateCalculator.xaml.h
@@ -45,6 +45,5 @@ namespace CalculatorApp
         void RaiseLiveRegionChangedAutomationEvent(_In_ bool isDateDiffMode);
 
         Windows::Foundation::EventRegistrationToken m_dateCalcOptionChangedEventToken;
-        void AddOption_Checked(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e);
     };
 }