diff --git a/src/slic3r/Utils/WxFontUtils.cpp b/src/slic3r/Utils/WxFontUtils.cpp
index 0547ce3e8c..76a04a314c 100644
--- a/src/slic3r/Utils/WxFontUtils.cpp
+++ b/src/slic3r/Utils/WxFontUtils.cpp
@@ -166,12 +166,12 @@ std::string WxFontUtils::get_human_readable_name(const wxFont &font)
     if (!font.IsOk()) return "Font is NOT ok.";
     // Face name is optional in wxFont
     if (!font.GetFaceName().empty()) {
-        return std::string(font.GetFaceName().c_str());
+        return std::string(font.GetFaceName().ToUTF8().data());
     } else {
         return std::string((font.GetFamilyString() + " " +
                             font.GetStyleString() + " " +
                             font.GetWeightString())
-                               .c_str());
+                               .ToUTF8().data());
     }
 }
 
@@ -193,7 +193,7 @@ wxFont WxFontUtils::load_wxFont(const std::string &font_descriptor)
 {
     BOOST_LOG_TRIVIAL(trace) << "'" << font_descriptor << "'font descriptor string param of load_wxFont()";
     wxString font_descriptor_wx(font_descriptor);
-    BOOST_LOG_TRIVIAL(trace) << "'" << font_descriptor_wx.c_str() << "' wx string descriptor";
+    BOOST_LOG_TRIVIAL(trace) << "'" << font_descriptor_wx.ToUTF8().data() << "' wx string descriptor";
     wxFont wx_font(font_descriptor_wx);
     BOOST_LOG_TRIVIAL(trace) << "loaded font is '" << get_human_readable_name(wx_font) << "'.";
     return wx_font;