diff --git a/xs/src/libslic3r/utils.cpp b/xs/src/libslic3r/utils.cpp
index 8f39186e2..e3cdd5084 100644
--- a/xs/src/libslic3r/utils.cpp
+++ b/xs/src/libslic3r/utils.cpp
@@ -183,7 +183,7 @@ std::string decode_path(const char *src)
 
 std::string normalize_utf8_nfc(const char *src)
 {
-    static std::locale locale_utf8("en_US.UTF-8");
+    static std::locale locale_utf8(boost::locale::generator().generate(""));
     return boost::locale::normalize(src, boost::locale::norm_nfc, locale_utf8);
 }