diff --git a/src/hints/HintsToPot.cpp b/src/hints/HintsToPot.cpp
index c93dc274c7..030d6aa9d3 100644
--- a/src/hints/HintsToPot.cpp
+++ b/src/hints/HintsToPot.cpp
@@ -9,7 +9,7 @@
 
 bool write_to_pot(boost::filesystem::path path, const std::vector<std::pair<std::string, std::string>>& data)
 {
-	boost::filesystem::ofstream file(std::move(path), std::ios_base::app);
+	boost::nowide::ofstream file(std::move(path), std::ios_base::app);
 	for (const auto& element : data)
 	{
 		//Example of .pot element 
diff --git a/src/libslic3r/utils.cpp b/src/libslic3r/utils.cpp
index 5951b2217c..b4e6e42602 100644
--- a/src/libslic3r/utils.cpp
+++ b/src/libslic3r/utils.cpp
@@ -1405,7 +1405,7 @@ bool bbl_calc_md5(std::string &filename, std::string &md5_out)
     unsigned char digest[16];
     MD5_CTX       ctx;
     MD5_Init(&ctx);
-    boost::filesystem::ifstream ifs(filename, std::ios::binary);
+    boost::nowide::ifstream ifs(filename, std::ios::binary);
     std::string                 buf(64 * 1024, 0);
     const std::size_t &         size      = boost::filesystem::file_size(filename);
     std::size_t                 left_size = size;