diff --git a/src/m_menu.c b/src/m_menu.c
index d0be0c719..946eaa9f4 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -1661,6 +1661,7 @@ void M_ClearMenus(boolean callexitmenufunc)
 
 	memset(menustack, 0, sizeof(menustack));
 	currentMenu = NULL;
+	messagebox.active = false;
 	hidetitlemap = false;
 
 	// D_StartTitle does its own wipe, since GS_TIMEATTACK is now a complete gamestate.