diff --git a/projects/openttd_vs100.vcxproj b/projects/openttd_vs100.vcxproj
--- a/projects/openttd_vs100.vcxproj
+++ b/projects/openttd_vs100.vcxproj
@@ -788,6 +788,8 @@
     <ClInclude Include="..\src\table\water_land.h" />
     <ClCompile Include="..\src\3rdparty\md5\md5.cpp" />
     <ClInclude Include="..\src\3rdparty\md5\md5.h" />
+    <ClCompile Include="..\src\script\script_config.cpp" />
+    <ClInclude Include="..\src\script\script_config.hpp" />
     <ClInclude Include="..\src\script\script_fatalerror.hpp" />
     <ClCompile Include="..\src\script\script_info.cpp" />
     <ClInclude Include="..\src\script\script_info.hpp" />