diff --git a/src/scripting/lua_gui2.cpp b/src/scripting/lua_gui2.cpp
index 0b282c47b346..5d81a0e9434f 100644
--- a/src/scripting/lua_gui2.cpp
+++ b/src/scripting/lua_gui2.cpp
@@ -462,6 +462,8 @@ int show_message_box(lua_State* L) {
 int intf_set_dialog_value(lua_State* L)
 {
 	gui2::widget *w = find_widget(L, 2, false);
+	if (w)
+		w->get_window()->invalidate_layout();
 
 #ifdef GUI2_EXPERIMENTAL_LISTBOX
 	if(gui2::list_view* list = dynamic_cast<gui2::list_view*>(w))