diff --git a/engines/m4/mads_menus.cpp b/engines/m4/mads_menus.cpp
index d7d9cf4150d..0addfc57cb1 100644
--- a/engines/m4/mads_menus.cpp
+++ b/engines/m4/mads_menus.cpp
@@ -309,6 +309,7 @@ void RexMainMenuView::handleAction(MadsGameAction action) {
 		return;
 
 	case SHOW_INTRO:
+		vm->_sound->loadDSRFile("act002.dsr");
 		vm->_viewManager->showAnimView("@rexopen");
 		break;