diff --git a/source/d_main.c b/source/d_main.c
index f3d1bce..6b4f756 100644
--- a/source/d_main.c
+++ b/source/d_main.c
@@ -598,9 +598,9 @@ static void IdentifyVersion()
                 _g->gamemission = doom;
                 break;
             case commercial:
-                _g->gamemission = doom2;
+				if(_g->gamemission != pack_tnt && _g->gamemission != pack_plut)
+					_g->gamemission = doom2;			
 				break;
-
             default:
                 _g->gamemission = none;
                 break;