diff --git a/src/libslic3r/Emboss.cpp b/src/libslic3r/Emboss.cpp
index ad4093e43c..8613682bbf 100644
--- a/src/libslic3r/Emboss.cpp
+++ b/src/libslic3r/Emboss.cpp
@@ -1090,7 +1090,7 @@ std::unique_ptr<FontFile> Emboss::create_font_file(
 
 std::unique_ptr<FontFile> Emboss::create_font_file(const char *file_path)
 {
-    FILE *file = std::fopen(file_path, "rb");
+    FILE *file = boost::nowide::fopen(file_path, "rb");
     if (file == nullptr) {
         assert(false);
         BOOST_LOG_TRIVIAL(error) << "Couldn't open " << file_path << " for reading.";
diff --git a/tests/libslic3r/test_emboss.cpp b/tests/libslic3r/test_emboss.cpp
index df5a80dc04..40f448f732 100644
--- a/tests/libslic3r/test_emboss.cpp
+++ b/tests/libslic3r/test_emboss.cpp
@@ -103,12 +103,13 @@ std::string get_font_filepath() {
 
 // Explicit horror include (used to be implicit) - libslic3r "officialy" does not depend on imgui.
 #include "../../bundled_deps/imgui/imgui/imstb_truetype.h" // stbtt_fontinfo
+#include "boost/nowide/cstdio.hpp"
 TEST_CASE("Read glyph C shape from font, stb library calls ONLY", "[Emboss]") {
     std::string font_path = get_font_filepath();
     char  letter   = 'C';
     
     // Read  font file
-    FILE *file = fopen(font_path.c_str(), "rb");
+    FILE *file = boost::nowide::fopen(font_path.c_str(), "rb");
     REQUIRE(file != nullptr);
     // find size of file
     REQUIRE(fseek(file, 0L, SEEK_END) == 0);