diff --git a/cpp/build/winRT/vs2015/OpenZWave.vcxproj b/cpp/build/winRT/vs2015/OpenZWave.vcxproj
index 1f287fb9..8cee454b 100644
--- a/cpp/build/winRT/vs2015/OpenZWave.vcxproj
+++ b/cpp/build/winRT/vs2015/OpenZWave.vcxproj
@@ -178,6 +178,7 @@
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</CompileAsWinRT>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\Bitfield.cpp" />
     <ClCompile Include="..\..\..\src\command_classes\Alarm.cpp" />
     <ClCompile Include="..\..\..\src\command_classes\ApplicationStatus.cpp" />
     <ClCompile Include="..\..\..\src\command_classes\Association.cpp" />
diff --git a/cpp/build/winRT/vs2015/OpenZWave.vcxproj.filters b/cpp/build/winRT/vs2015/OpenZWave.vcxproj.filters
index 6c6d24a1..7c5f6653 100644
--- a/cpp/build/winRT/vs2015/OpenZWave.vcxproj.filters
+++ b/cpp/build/winRT/vs2015/OpenZWave.vcxproj.filters
@@ -723,6 +723,9 @@
     <ClCompile Include="..\..\..\src\command_classes\ManufacturerProprietary.cpp">
       <Filter>Command Classes</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\Bitfield.cpp">
+      <Filter>Main</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <Text Include="..\..\..\src\aes\aes.txt">
diff --git a/cpp/build/windows/vs2010/OpenZWave.vcxproj b/cpp/build/windows/vs2010/OpenZWave.vcxproj
index 6be8b79c..c403da65 100644
--- a/cpp/build/windows/vs2010/OpenZWave.vcxproj
+++ b/cpp/build/windows/vs2010/OpenZWave.vcxproj
@@ -323,6 +323,7 @@ exit 0</Command>
     <ClCompile Include="..\..\..\src\aes\aeskey.c" />
     <ClCompile Include="..\..\..\src\aes\aestab.c" />
     <ClCompile Include="..\..\..\src\aes\aes_modes.c" />
+    <ClCompile Include="..\..\..\src\Bitfield.cpp" />
     <ClCompile Include="..\..\..\src\command_classes\BarrierOperator.cpp" />
     <ClCompile Include="..\..\..\src\command_classes\DeviceResetLocally.cpp" />
     <ClCompile Include="..\..\..\src\command_classes\DoorLock.cpp" />
diff --git a/cpp/build/windows/vs2010/OpenZWave.vcxproj.filters b/cpp/build/windows/vs2010/OpenZWave.vcxproj.filters
index 714e10fe..27ec6cf3 100644
--- a/cpp/build/windows/vs2010/OpenZWave.vcxproj.filters
+++ b/cpp/build/windows/vs2010/OpenZWave.vcxproj.filters
@@ -728,5 +728,8 @@
     <ClCompile Include="..\..\..\src\command_classes\ManufacturerProprietary.cpp">
       <Filter>Command Classes</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\Bitfield.cpp">
+      <Filter>Main</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file