diff --git a/src/dialogxml/dialogs/dialog.cpp b/src/dialogxml/dialogs/dialog.cpp
index b58fdc5c..b71a5138 100644
--- a/src/dialogxml/dialogs/dialog.cpp
+++ b/src/dialogxml/dialogs/dialog.cpp
@@ -167,12 +167,13 @@ cKey cControl::parseKey(string what){
 	return key;
 }
 
-cDialog::cDialog(cDialog* p) : parent(p) {}
-
-cDialog::cDialog(std::string path, cDialog* p) : parent(p) {
-	loadFromFile(path + ".xml");
+cDialog::cDialog(cDialog* p) : parent(p), ui_scale(-1) {
 }
 
+cDialog::cDialog(std::string path, cDialog* p) : parent(p), ui_scale(-1) {
+	loadFromFile(path + ".xml");
+}
+				 
 extern fs::path progDir;
 void cDialog::loadFromFile(std::string path){
 	static const cKey enterKey = {true, key_enter};
@@ -551,9 +552,32 @@ void cDialog::run(std::function<void(cDialog&)> onopen){
 	win.create(sf::VideoMode(1,1),"");
 	win.close();
 #endif
-	win.create(sf::VideoMode(winRect.width(), winRect.height()), "Dialog", sf::Style::Titlebar);
+	if (ui_scale<=0) {
+		ui_scale = get_float_pref("UIScale", 1.0);
+		if (ui_scale < 0.1) ui_scale = 1.0;
+		
+		// check that the dialog can be displayed on the screen
+		sf::VideoMode desktop = sf::VideoMode::getDesktopMode();
+		if (desktop.width< ui_scale*winRect.width())
+			ui_scale=float(desktop.width)/winRect.width();
+		if ((desktop.height-30)< ui_scale*winRect.height())
+			ui_scale=float(desktop.height-30)/winRect.height();
+	}
+
+	int wWidth=int(ui_scale*winRect.width()), wHeight=int(ui_scale*winRect.height());
+	win.create(sf::VideoMode(wWidth, wHeight), "Dialog", sf::Style::Titlebar);
+	sf::FloatRect viewport;
+	viewport.top	= 0;
+	viewport.left   = 0;
+	viewport.width  = ui_scale;
+	viewport.height = ui_scale;
+	sf::View view;
+	view.reset(sf::FloatRect(0, 0, wWidth, wHeight));
+	view.setViewport(viewport);
+	win.setView(view);
+
 	// ASAN overflow
-	win.setPosition({parentPos.x + (int(parentSz.x) - winRect.width()) / 2, parentPos.y + (int(parentSz.y) - winRect.height()) / 2});
+	win.setPosition({parentPos.x + (int(parentSz.x) - wWidth) / 2, parentPos.y + (int(parentSz.y) - wHeight) / 2});
 	draw();
 	makeFrontWindow(parent ? parent-> win : mainPtr);
 	makeFrontWindow(win);
@@ -719,7 +743,7 @@ void cDialog::handle_one_event(const sf::Event& currentEvent) {
 			if(kb::isKeyPressed(kb::RAlt)) key.mod += mod_alt;
 			if(kb::isKeyPressed(kb::LShift)) key.mod += mod_shift;
 			if(kb::isKeyPressed(kb::RShift)) key.mod += mod_shift;
-			where = {currentEvent.mouseButton.x, currentEvent.mouseButton.y};
+			where = {int(currentEvent.mouseButton.x/ui_scale), int(currentEvent.mouseButton.y/ui_scale)};
 			process_click(where, key.mod);
 			break;
 		default: // To silence warning of unhandled enum values
@@ -728,7 +752,7 @@ void cDialog::handle_one_event(const sf::Event& currentEvent) {
 		case sf::Event::MouseMoved:
 			bool inField = false;
 			for(auto& ctrl : controls) {
-				if(ctrl.second->getType() == CTRL_FIELD && ctrl.second->getBounds().contains(currentEvent.mouseMove.x, currentEvent.mouseMove.y)) {
+				if(ctrl.second->getType() == CTRL_FIELD && ctrl.second->getBounds().contains(currentEvent.mouseMove.x/ui_scale, currentEvent.mouseMove.y/ui_scale)) {
 					set_cursor(text_curs);
 					inField = true;
 					break;
diff --git a/src/dialogxml/dialogs/dialog.hpp b/src/dialogxml/dialogs/dialog.hpp
index 2b26dc59..af6cc62f 100644
--- a/src/dialogxml/dialogs/dialog.hpp
+++ b/src/dialogxml/dialogs/dialog.hpp
@@ -38,6 +38,7 @@ enum eLabelPos {
 class cDialog {
 	typedef std::map<std::string,cControl*>::iterator ctrlIter;
 	std::map<std::string,cControl*> controls;
+	float ui_scale;
 	short bg;
 	sf::Color defTextClr;
 	sf::RenderWindow win;