diff --git a/platform/Windows/build.vcxproj b/platform/Windows/build.vcxproj
index 49c001f35..925a0fe4a 100644
--- a/platform/Windows/build.vcxproj
+++ b/platform/Windows/build.vcxproj
@@ -324,8 +324,8 @@
     <ClInclude Include="..\..\source\build\include\dxdidf.h" />
     <ClInclude Include="..\..\source\build\include\dynamicgtk.h" />
     <ClInclude Include="..\..\source\build\include\editor.h" />
-    <ClInclude Include="..\..\source\build\include\fix16.h" />
-    <ClInclude Include="..\..\source\build\include\fix16.hpp" />
+    <ClInclude Include="..\..\source\thirdparty\include\fix16.h" />
+    <ClInclude Include="..\..\source\thirdparty\include\fix16.hpp" />
     <ClInclude Include="..\..\source\build\include\fix16_int64.h" />
     <ClInclude Include="..\..\source\build\include\glbuild.h" />
     <ClInclude Include="..\..\source\build\include\glsurface.h" />
@@ -352,10 +352,6 @@
     <ClInclude Include="..\..\source\build\include\polymer.h" />
     <ClInclude Include="..\..\source\build\include\polymost.h" />
     <ClInclude Include="..\..\source\build\include\pragmas.h" />
-    <ClInclude Include="..\..\source\build\include\pragmas_arm.h" />
-    <ClInclude Include="..\..\source\build\include\pragmas_ppc.h" />
-    <ClInclude Include="..\..\source\build\include\pragmas_x86_gcc.h" />
-    <ClInclude Include="..\..\source\build\include\pragmas_x86_msvc.h" />
     <ClInclude Include="..\..\source\build\include\print.h" />
     <ClInclude Include="..\..\source\build\include\prlights.h" />
     <ClInclude Include="..\..\source\build\include\rawinput.h" />
diff --git a/source/build/include/fix16.h b/source/thirdparty/include/fix16.h
similarity index 100%
rename from source/build/include/fix16.h
rename to source/thirdparty/include/fix16.h
diff --git a/source/build/include/fix16_int64.h b/source/thirdparty/include/fix16_int64.h
similarity index 100%
rename from source/build/include/fix16_int64.h
rename to source/thirdparty/include/fix16_int64.h
diff --git a/source/build/src/fix16.cpp b/source/thirdparty/src/fix16.cpp
similarity index 100%
rename from source/build/src/fix16.cpp
rename to source/thirdparty/src/fix16.cpp
diff --git a/source/build/src/fix16_str.cpp b/source/thirdparty/src/fix16_str.cpp
similarity index 100%
rename from source/build/src/fix16_str.cpp
rename to source/thirdparty/src/fix16_str.cpp