diff --git a/projects/openttd_vs140.vcxproj b/projects/openttd_vs140.vcxproj
index 88f7b44ddd..b82aba741c 100644
--- a/projects/openttd_vs140.vcxproj
+++ b/projects/openttd_vs140.vcxproj
@@ -886,6 +886,8 @@
     <ClCompile Include="..\src\saveload\town_sl.cpp" />
     <ClCompile Include="..\src\saveload\vehicle_sl.cpp" />
     <ClCompile Include="..\src\saveload\waypoint_sl.cpp" />
+    <ClInclude Include="..\src\saveload\extended_ver_sl.h" />
+    <ClCompile Include="..\src\saveload\extended_ver_sl.cpp" />
     <ClInclude Include="..\src\table\airport_defaults.h" />
     <ClInclude Include="..\src\table\airport_movement.h" />
     <ClInclude Include="..\src\table\airporttile_ids.h" />
diff --git a/projects/openttd_vs140.vcxproj.filters b/projects/openttd_vs140.vcxproj.filters
index 06800ffdaf..0b6dc573b4 100644
--- a/projects/openttd_vs140.vcxproj.filters
+++ b/projects/openttd_vs140.vcxproj.filters
@@ -1836,6 +1836,12 @@
     <ClCompile Include="..\src\saveload\waypoint_sl.cpp">
       <Filter>Save/Load handlers</Filter>
     </ClCompile>
+    <ClInclude Include="..\src\saveload\extended_ver_sl.h">
+      <Filter>Save/Load handlers</Filter>
+    </ClInclude>
+    <ClCompile Include="..\src\saveload\extended_ver_sl.cpp">
+      <Filter>Save/Load handlers</Filter>
+    </ClCompile>
     <ClInclude Include="..\src\table\airport_defaults.h">
       <Filter>Tables</Filter>
     </ClInclude>