diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 256b3ec198..28b69e3e5b 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -963,7 +963,7 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
         this->q->Bind(EVT_UA_AVATAR_SUCCESS, [this](UserAccountSuccessEvent& evt) {
            boost::filesystem::path path = user_account->get_avatar_path(true);
            FILE* file; 
-           file = fopen(path.string().c_str(), "wb");
+           file = boost::nowide::fopen(path.generic_string().c_str(), "wb");
            if (file == NULL) {
                BOOST_LOG_TRIVIAL(error) << "Failed to create file to store avatar picture at: " << path;
                return;
diff --git a/src/slic3r/GUI/UserAccount.cpp b/src/slic3r/GUI/UserAccount.cpp
index 65c9bc40d1..7eff95758c 100644
--- a/src/slic3r/GUI/UserAccount.cpp
+++ b/src/slic3r/GUI/UserAccount.cpp
@@ -79,7 +79,7 @@ boost::filesystem::path UserAccount::get_avatar_path(bool logged) const
 {
     if (logged) {
         const std::string filename = "prusaslicer-avatar-" + m_instance_hash + m_avatar_extension;
-        return GUI::into_path(wxStandardPaths::Get().GetTempDir()) / filename;
+        return into_path(wxStandardPaths::Get().GetTempDir()) / filename;
     } else {
         return  boost::filesystem::path(resources_dir()) / "icons" / "user.svg";
     }