diff --git a/src/slic3r/GUI/GUI.cpp b/src/slic3r/GUI/GUI.cpp
index bccf211ef..0ff4ed161 100644
--- a/src/slic3r/GUI/GUI.cpp
+++ b/src/slic3r/GUI/GUI.cpp
@@ -348,51 +348,6 @@ bool get_current_screen_size(wxWindow *window, unsigned &width, unsigned &height
 	return true;
 }
 
-// XXX: remove these
-void save_window_size(wxTopLevelWindow *window, const std::string &name)
-{
-	const wxSize size = window->GetSize();
-	const wxPoint pos = window->GetPosition();
-	const auto maximized = window->IsMaximized() ? "1" : "0";
-
-	get_app_config()->set((boost::format("window_%1%_size") % name).str(), (boost::format("%1%;%2%") % size.GetWidth() % size.GetHeight()).str());
-	get_app_config()->set((boost::format("window_%1%_maximized") % name).str(), maximized);
-}
-
-void restore_window_size(wxTopLevelWindow *window, const std::string &name)
-{
-	// XXX: This still doesn't behave nicely in some situations (mostly on Linux).
-	// The problem is that it's hard to obtain window position with respect to screen geometry reliably
-	// from wxWidgets. Sometimes wxWidgets claim a window is located on a different screen than on which
-	// it's actually visible. I suspect this has something to do with window initialization (maybe we
-	// restore window geometry too early), but haven't yet found a workaround.
-
-	const auto display_idx = wxDisplay::GetFromWindow(window);
-	if (display_idx == wxNOT_FOUND) { return; }
-
-	const auto display = wxDisplay(display_idx).GetClientArea();
-	std::vector<std::string> pair;
-
-	try {
-		const auto key_size = (boost::format("window_%1%_size") % name).str();
-		if (get_app_config()->has(key_size)) {
-			if (unescape_strings_cstyle(get_app_config()->get(key_size), pair) && pair.size() == 2) {
-				auto width = boost::lexical_cast<int>(pair[0]);
-				auto height = boost::lexical_cast<int>(pair[1]);
-
-				window->SetSize(width, height);
-			}
-		}
-	} catch(const boost::bad_lexical_cast &) {}
-
-	// Maximizing should be the last thing to do.
-	// This ensure the size and position are sane when the user un-maximizes the window.
-	const auto key_maximized = (boost::format("window_%1%_maximized") % name).str();
-	if (get_app_config()->get(key_maximized) == "1") {
-		window->Maximize(true);
-	}
-}
-
 void about()
 {
     AboutDialog dlg;
diff --git a/src/slic3r/GUI/GUI.hpp b/src/slic3r/GUI/GUI.hpp
index 79b21b503..e33be8f58 100644
--- a/src/slic3r/GUI/GUI.hpp
+++ b/src/slic3r/GUI/GUI.hpp
@@ -70,11 +70,6 @@ boost::filesystem::path	into_path(const wxString &str);
 // Returns the dimensions of the screen on which the main frame is displayed
 bool get_current_screen_size(wxWindow *window, unsigned &width, unsigned &height);
 
-// Save window size and maximized status into AppConfig
-void save_window_size(wxTopLevelWindow *window, const std::string &name);
-// Restore the above
-void restore_window_size(wxTopLevelWindow *window, const std::string &name);
-
 // Display an About dialog
 extern void about();
 // Ask the destop to open the datadir using the default file explorer.