diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index b46273d64a..d3aa486d09 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -9224,7 +9224,7 @@ bool GUI_App::check_url_association(std::wstring url_prefix, std::wstring& reg_b
 {
     reg_bin = L"";
 #ifdef WIN32
-    wxRegKey key_full(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix + "\\shell\\open\\command");
+    wxRegKey key_full(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix + L"\\shell\\open\\command");
     if (!key_full.Exists()) {
         return false;
     }
@@ -9250,8 +9250,8 @@ void GUI_App::associate_url(std::wstring url_prefix)
 
     wxString key_string = "\"" + wbinary + "\" \"%1\"";
 
-    wxRegKey key_first(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix);
-    wxRegKey key_full(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix + "\\shell\\open\\command");
+    wxRegKey key_first(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix);
+    wxRegKey key_full(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix + L"\\shell\\open\\command");
     if (!key_first.Exists()) {
         key_first.Create(false);
     }
@@ -9271,7 +9271,7 @@ void GUI_App::disassociate_url(std::wstring url_prefix)
 #ifdef WIN32
     if (is_running_in_msix())
         return;
-    wxRegKey key_full(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix + "\\shell\\open\\command");
+    wxRegKey key_full(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix + L"\\shell\\open\\command");
     if (!key_full.Exists()) {
         return;
     }