diff --git a/libs/io/source/file_stream.cpp b/libs/io/source/file_stream.cpp
index 1988078c..8f48b6f3 100644
--- a/libs/io/source/file_stream.cpp
+++ b/libs/io/source/file_stream.cpp
@@ -1,18 +1,20 @@
 #include <psemek/io/file_stream.hpp>
 
 #include <cstring>
+#include <codecvt>
 
 namespace psemek::io
 {
 
 	static void throw_fopen [[noreturn]] (std::filesystem::path const & path)
 	{
-		throw std::runtime_error("Failed to open " + path.native() + ": " + std::string(std::strerror(errno)));
+		throw std::runtime_error("Failed to open " + path.string() + ": " + std::string(std::strerror(errno)));
 	}
 
 	static FILE * safe_fopen(std::filesystem::path const & path, const char * mode)
 	{
-		auto f = std::fopen(path.c_str(), mode);
+		std::string path_str = path.string();
+		auto f = std::fopen(path_str.c_str(), mode);
 		if (!f) throw_fopen(path);
 		return f;
 	}