diff --git a/wadsrc/static/iwadinfo.txt b/wadsrc/static/iwadinfo.txt
index 470012579..2bf5f836a 100644
--- a/wadsrc/static/iwadinfo.txt
+++ b/wadsrc/static/iwadinfo.txt
@@ -216,7 +216,7 @@ IWad
 	Autoname = "Doom1"
 	Game = "Doom"
 	Config = "Doom"
-	Mapinfo = "mapinfo/doom1.txt"
+	Mapinfo = "mapinfo/ultdoom.txt"
 	Compatibility = "Shorttex"
 	MustContain = "E1M1","E2M1","E2M2","E2M3","E2M4","E2M5","E2M6","E2M7","E2M8","E2M9",
 		          "E3M1","E3M2","E3M3","E3M4","E3M5","E3M6","E3M7","E3M8","E3M9",