diff --git a/AppleWinExpress2010.vcxproj.filters b/AppleWinExpress2010.vcxproj.filters
index 3052e88a..18d28f00 100644
--- a/AppleWinExpress2010.vcxproj.filters
+++ b/AppleWinExpress2010.vcxproj.filters
@@ -215,6 +215,9 @@
     <ClCompile Include="source\NTSC.cpp">
       <Filter>Source\Video</Filter>
     </ClCompile>
+    <ClCompile Include="source\NTSC_CharSet.cpp">
+      <Filter>Source\Video</Filter>
+    </ClCompile>
     <ClCompile Include="source\SAM.cpp">
       <Filter>Source\Emulator</Filter>
     </ClCompile>