diff --git a/deps/ox/src/ox/fs/filesystem/passthroughfs.cpp b/deps/ox/src/ox/fs/filesystem/passthroughfs.cpp
index f4c544c4..94dad120 100644
--- a/deps/ox/src/ox/fs/filesystem/passthroughfs.cpp
+++ b/deps/ox/src/ox/fs/filesystem/passthroughfs.cpp
@@ -6,7 +6,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#if __has_include(<filesystem>) && defined(OX_USE_STDLIB)
+#if OX_PASSTHROUGHFS_HAS_DEPENDENCIES && defined(OX_USE_STDLIB)
 
 #include <stdio.h>
 
diff --git a/deps/ox/src/ox/fs/filesystem/passthroughfs.hpp b/deps/ox/src/ox/fs/filesystem/passthroughfs.hpp
index 2f046d5c..3be8186c 100644
--- a/deps/ox/src/ox/fs/filesystem/passthroughfs.hpp
+++ b/deps/ox/src/ox/fs/filesystem/passthroughfs.hpp
@@ -13,12 +13,23 @@
 #include <filesystem>
 #include <string>
 
-#include "filesystem.hpp"
+#define OX_PASSTHROUGHFS_HAS_DEPENDENCIES
+
+#elif defined(OX_USE_BOOSTFS)
+
+#include <boost/filesystem>
+#include <string>
 
-#ifdef OX_USE_BOOSTFS
 using std::filesystem = boost::filesystem;
+
+#define OX_PASSTHROUGHFS_HAS_DEPENDENCIES
+
 #endif
 
+#ifdef OX_PASSTHROUGHFS_HAS_DEPENDENCIES
+
+#include "filesystem.hpp"
+
 namespace ox {
 
 /**