diff --git a/src/of_path.cpp b/src/of_path.cpp
index 27207f4..da47dde 100644
--- a/src/of_path.cpp
+++ b/src/of_path.cpp
@@ -1,8 +1,15 @@
 #include "of_path.h"
 #include "of_str.h"
-#include <filesystem>
 #include <fstream>
 
+#ifdef USE_BOOST_FILESYSTEM
+#include <boost/filesystem.hpp>
+namespace fs = boost::filesystem;
+#else
+#include <filesystem>
+namespace fs = std::filesystem;
+#endif
+
 #ifdef _WIN32
 #include <windows.h>
 #elif defined(__clang__) && defined(__APPLE__)
@@ -16,7 +23,6 @@
 #define PATH_MAX 256
 #endif
 
-namespace fs = std::filesystem;
 namespace ofen {
 COfPath::COfPath()
 {