diff --git a/scripts/check-code-formatting.sh b/scripts/check-code-formatting.sh
index 0582480d..63338bf1 100755
--- a/scripts/check-code-formatting.sh
+++ b/scripts/check-code-formatting.sh
@@ -5,4 +5,4 @@ set -e
 basedir="$(readlink -f `dirname $0`/..)"
 cd $basedir
 
-scripts/run-clang-format.py -r src --exclude src/openloco/thirdparty
+scripts/run-clang-format.py -r src --exclude src/Thirdparty
diff --git a/src/openloco/thirdparty/filesystem.hpp b/src/Thirdparty/filesystem.hpp
similarity index 100%
rename from src/openloco/thirdparty/filesystem.hpp
rename to src/Thirdparty/filesystem.hpp
diff --git a/src/openloco/Core/FileSystem.hpp b/src/openloco/Core/FileSystem.hpp
index accd1d7d..8b45bcb8 100644
--- a/src/openloco/Core/FileSystem.hpp
+++ b/src/openloco/Core/FileSystem.hpp
@@ -24,7 +24,7 @@
 #include <filesystem>
 namespace fs = std::filesystem;
 #else
-#include "../thirdparty/filesystem.hpp"
+#include "../../Thirdparty/filesystem.hpp"
 namespace fs = ghc::filesystem;
 #endif
 
diff --git a/src/openloco/openloco.vcxproj b/src/openloco/openloco.vcxproj
index d5122c47..87808234 100644
--- a/src/openloco/openloco.vcxproj
+++ b/src/openloco/openloco.vcxproj
@@ -141,6 +141,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\resources\Resource.h" />
+    <ClInclude Include="..\Thirdparty\filesystem.hpp" />
     <ClInclude Include="Audio\Audio.h" />
     <ClInclude Include="Audio\Channel.h" />
     <ClInclude Include="Audio\MusicChannel.h" />
@@ -219,7 +220,6 @@
     <ClInclude Include="Things\Thing.h" />
     <ClInclude Include="Things\ThingManager.h" />
     <ClInclude Include="Things\Vehicle.h" />
-    <ClInclude Include="thirdparty\filesystem.hpp" />
     <ClInclude Include="Title.h" />
     <ClInclude Include="Town.h" />
     <ClInclude Include="TownManager.h" />