diff --git a/src/settings_gui.cpp b/src/settings_gui.cpp
index d8b20ebbb9..171a4fbd4b 100644
--- a/src/settings_gui.cpp
+++ b/src/settings_gui.cpp
@@ -557,8 +557,17 @@ struct GameOptionsWindow : Window {
 			case WID_GO_GUI_ZOOM_DROPDOWN:
 				GfxClearSpriteCache();
 				_gui_zoom = (ZoomLevel)(ZOOM_LVL_OUT_4X - index);
+				switch (_gui_zoom) {
+					case ZOOM_LVL_NORMAL: ChangeResInGame(854, 480); break;
+					case ZOOM_LVL_OUT_2X: ChangeResInGame(1280, 720); break;
+					case ZOOM_LVL_OUT_4X: ChangeResInGame(1920, 1080); break;
+					default: break;
+				}
 				UpdateCursorSize();
 				LoadStringWidthTable();
+				ReconstructUserInterface();
+				this->SetDirty();
+				break;
 
 			case WID_GO_BUTTON_SIZE_DROPDOWN: // Setup screenshot format dropdown
 				_settings_client.gui.min_button = index;