diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 8a785760c..dd107550e 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -986,6 +986,7 @@ wxString GUI_App::current_language_code_safe() const
 		language_code = language_code.substr(0, idx_underscore);
 	const std::map<wxString, wxString> mapping {
 		{ "cs", 	"cs_CZ", },
+		{ "sk", 	"cs_CZ", },
 		{ "de", 	"de_DE", },
 		{ "es", 	"es_ES", },
 		{ "fr", 	"fr_FR", },
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index a85ab0609..b03120e62 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -1024,6 +1024,11 @@ const std::vector<std::string>& ObjectList::get_options_for_bundle(const wxStrin
 	return empty;
 }
 
+static bool improper_category(const std::string& category, const int extruders_cnt)
+{
+    return category.empty() || (extruders_cnt == 1 && (category == "Extruders" || category == "Wipe options" ));
+}
+
 void ObjectList::get_options_menu(settings_menu_hierarchy& settings_menu, const bool is_part)
 {
     auto options = get_options(is_part);
@@ -1035,8 +1040,8 @@ void ObjectList::get_options_menu(settings_menu_hierarchy& settings_menu, const
     {
         auto const opt = config.def()->get(option);
         auto category = opt->category;
-        if (category.empty() ||
-            (category == "Extruders" && extruders_cnt == 1)) continue;
+        if (improper_category(category, extruders_cnt))
+            continue;
 
         const std::string& label = !opt->full_label.empty() ? opt->full_label : opt->label;
         std::pair<std::string, std::string> option_label(option, label);
@@ -1548,7 +1553,7 @@ void ObjectList::create_freq_settings_popupmenu(wxMenu *menu)
     const int extruders_cnt = extruders_count();
 
     for (auto& it : bundle) {
-        if (it.first.empty() || it.first == "Extruders" && extruders_cnt == 1) 
+        if (improper_category(it.first, extruders_cnt)) 
             continue;
 
         append_menu_item(menu, wxID_ANY, _(it.first), "",
@@ -1561,7 +1566,7 @@ void ObjectList::create_freq_settings_popupmenu(wxMenu *menu)
                                              m_freq_settings_fff : m_freq_settings_sla;
 
     for (auto& it : bundle_quick) {
-        if (it.first.empty() || it.first == "Extruders" && extruders_cnt == 1) 
+        if (improper_category(it.first, extruders_cnt))
             continue;
 
         append_menu_item(menu, wxID_ANY, wxString::Format(_(L("Quick Add Settings (%s)")), _(it.first)), "",
@@ -2195,7 +2200,7 @@ SettingsBundle ObjectList::get_item_settings_bundle(const DynamicPrintConfig* co
     for (auto& opt_key : opt_keys)
     {
         auto category = config->def()->get(opt_key)->category;
-        if (category.empty() || (category == "Extruders" && extruders_cnt == 1)) 
+        if (improper_category(category, extruders_cnt))
             continue;
 
         std::vector< std::string > new_category;
@@ -2467,13 +2472,13 @@ void ObjectList::del_layer_range(const t_layer_height_range& range)
     select_item(selectable_item);
 }
 
-double get_min_layer_height(const int extruder_idx)
+static double get_min_layer_height(const int extruder_idx)
 {
     const DynamicPrintConfig& config = wxGetApp().preset_bundle->printers.get_edited_preset().config;
     return config.opt_float("min_layer_height", extruder_idx <= 0 ? 0 : extruder_idx-1);
 }
 
-double get_max_layer_height(const int extruder_idx)
+static double get_max_layer_height(const int extruder_idx)
 {
     const DynamicPrintConfig& config = wxGetApp().preset_bundle->printers.get_edited_preset().config;
     return config.opt_float("max_layer_height", extruder_idx <= 0 ? 0 : extruder_idx-1);