diff --git a/src/windows/Stella.vcxproj b/src/windows/Stella.vcxproj
index e30380d41..91eaec13e 100644
--- a/src/windows/Stella.vcxproj
+++ b/src/windows/Stella.vcxproj
@@ -226,8 +226,9 @@
     <ClCompile Include="..\common\FBSurfaceSDL2.cxx" />
     <ClCompile Include="..\common\FrameBufferSDL2.cxx" />
     <ClCompile Include="..\common\FSNodeZIP.cxx" />
+    <ClCompile Include="..\common\main.cxx" />
     <ClCompile Include="..\common\MouseControl.cxx" />
-    <ClCompile Include="..\common\tv_filters\atari_ntsc.c" />
+    <ClCompile Include="..\common\tv_filters\atari_ntsc.cxx" />
     <ClCompile Include="..\common\tv_filters\NTSCFilter.cxx" />
     <ClCompile Include="..\common\ZipHandler.cxx" />
     <ClCompile Include="..\debugger\gui\AtariVoxWidget.cxx" />
@@ -296,11 +297,6 @@
     <ClCompile Include="..\gui\LoggerDialog.cxx" />
     <ClCompile Include="..\gui\SnapshotDialog.cxx" />
     <ClCompile Include="FSNodeWINDOWS.cxx" />
-    <ClCompile Include="..\common\mainSDL.cxx">
-      <Optimization Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Full</Optimization>
-      <WholeProgramOptimization Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</WholeProgramOptimization>
-      <WholeProgramOptimization Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</WholeProgramOptimization>
-    </ClCompile>
     <ClCompile Include="OSystemWINDOWS.cxx" />
     <ClCompile Include="..\common\PNGLibrary.cxx" />
     <ClCompile Include="SerialPortWINDOWS.cxx" />
@@ -480,8 +476,8 @@
     <ClInclude Include="..\common\StellaKeys.hxx" />
     <ClInclude Include="..\common\StringList.hxx" />
     <ClInclude Include="..\common\StringParser.hxx" />
-    <ClInclude Include="..\common\tv_filters\atari_ntsc.h" />
-    <ClInclude Include="..\common\tv_filters\atari_ntsc_impl.h" />
+    <ClInclude Include="..\common\tv_filters\atari_ntsc.hxx" />
+    <ClInclude Include="..\common\tv_filters\atari_ntsc_impl.hxx" />
     <ClInclude Include="..\common\tv_filters\NTSCFilter.hxx" />
     <ClInclude Include="..\common\Variant.hxx" />
     <ClInclude Include="..\common\ZipHandler.hxx" />
@@ -740,4 +736,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/src/windows/Stella.vcxproj.filters b/src/windows/Stella.vcxproj.filters
index 7889fb59c..af7ec69d1 100644
--- a/src/windows/Stella.vcxproj.filters
+++ b/src/windows/Stella.vcxproj.filters
@@ -57,9 +57,6 @@
     <ClCompile Include="FSNodeWINDOWS.cxx">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\common\mainSDL.cxx">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="OSystemWINDOWS.cxx">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -594,9 +591,6 @@
     <ClCompile Include="..\common\MouseControl.cxx">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\common\tv_filters\atari_ntsc.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="..\common\tv_filters\NTSCFilter.cxx">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -774,6 +768,12 @@
     <ClCompile Include="..\emucore\EventJoyHandler.cxx">
       <Filter>Source Files\emucore</Filter>
     </ClCompile>
+    <ClCompile Include="..\common\main.cxx">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\common\tv_filters\atari_ntsc.cxx">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\common\Array.hxx">
@@ -1358,12 +1358,6 @@
     <ClInclude Include="..\common\MouseControl.hxx">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\common\tv_filters\atari_ntsc.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
-    <ClInclude Include="..\common\tv_filters\atari_ntsc_impl.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
     <ClInclude Include="..\common\tv_filters\NTSCFilter.hxx">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -1562,6 +1556,12 @@
     <ClInclude Include="..\debugger\gui\CartMDMWidget.hxx">
       <Filter>Header Files\debugger</Filter>
     </ClInclude>
+    <ClInclude Include="..\common\tv_filters\atari_ntsc.hxx">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\common\tv_filters\atari_ntsc_impl.hxx">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="stella.ico">
@@ -1573,4 +1573,4 @@
       <Filter>Resource Files</Filter>
     </ResourceCompile>
   </ItemGroup>
-</Project>
+</Project>
\ No newline at end of file