diff --git a/xs/src/slic3r/GUI/GUI.cpp b/xs/src/slic3r/GUI/GUI.cpp
index 83d1e246e..2542c04c6 100644
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@@ -813,24 +813,24 @@ void add_frequently_changed_parameters(wxWindow* parent, wxBoxSizer* sizer, wxFl
 	wxCollapsiblePane *collpane = new wxCollapsiblePane(parent, wxID_ANY, "Print settings:");
 	collpane->Bind(wxEVT_COLLAPSIBLEPANE_CHANGED, ([parent, collpane](wxCommandEvent e){
 		wxWindowUpdateLocker noUpdates(parent);
-
   		parent->Layout();
 		collpane->Refresh();
 	}));
 
 	// add the pane with a zero proportion value to the sizer which contains it
-	sizer->Add(collpane, 0, wxGROW | wxALL, 5);
-	// now add a test label in the collapsible pane using a sizer to layout it:
+	sizer->Add(collpane, 0, wxGROW | wxALL, 0);
+
 	wxWindow *win = collpane->GetPane();
 #ifdef __WXMSW__
-	collpane->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
-	win->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
+	wxColour& clr = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
+	collpane->GetControlWidget()->SetWindowStyleFlag(wxNO_BORDER);
+	collpane->GetControlWidget()->SetBackgroundColour(clr);
+	collpane->SetBackgroundColour(clr);
+	win->SetBackgroundColour(clr);
 #endif //__WXMSW__
 
 	DynamicPrintConfig*	config = &g_PresetBundle->prints.get_edited_preset().config;
-	m_optgroup = std::make_shared<ConfigOptionsGroup>(/*parent*/win, "", config);
-//	const wxArrayInt& ar = preset_sizer->GetColWidths();
-// 	m_optgroup->label_width = ar.IsEmpty() ? 100 : ar.front(); // doesn't work
+	m_optgroup = std::make_shared<ConfigOptionsGroup>(win, "", config);
 	m_optgroup->m_on_change = [config](t_config_option_key opt_key, boost::any value){
 		TabPrint* tab_print = nullptr;
 		for (size_t i = 0; i < g_wxTabPanel->GetPageCount(); ++i) {
@@ -943,10 +943,6 @@ void add_frequently_changed_parameters(wxWindow* parent, wxBoxSizer* sizer, wxFl
 		m_optgroup->append_line(line);
 
 
-
-// 	sizer->Add(m_optgroup->sizer, 1, wxEXPAND | wxBOTTOM, 2);
-
-
 	wxSizer *paneSz = new wxBoxSizer(wxVERTICAL);
 	paneSz->Add(m_optgroup->sizer, 1, wxGROW | wxEXPAND | wxBOTTOM, 2);
 	win->SetSizer(paneSz);