diff --git a/src/gamedata/g_mapinfo.cpp b/src/gamedata/g_mapinfo.cpp
index f08b7bcef..e8cb532a5 100644
--- a/src/gamedata/g_mapinfo.cpp
+++ b/src/gamedata/g_mapinfo.cpp
@@ -1687,6 +1687,7 @@ MapFlagHandlers[] =
 	{ "compat_minotaur",				MITYPE_COMPATFLAG, COMPATF_MINOTAUR, 0 },
 	{ "compat_mushroom",				MITYPE_COMPATFLAG, COMPATF_MUSHROOM, 0 },
 	{ "compat_mbfmonstermove",			MITYPE_COMPATFLAG, COMPATF_MBFMONSTERMOVE, 0 },
+	{ "compat_corpsegibs",				MITYPE_COMPATFLAG, 0, 0 },	// this flag no longer exists, but we need it here for old mapinfos.
 	{ "compat_vileghosts",				MITYPE_COMPATFLAG, COMPATF_VILEGHOSTS, 0 },
 	{ "compat_noblockfriends",			MITYPE_COMPATFLAG, COMPATF_NOBLOCKFRIENDS, 0 },
 	{ "compat_spritesort",				MITYPE_COMPATFLAG, COMPATF_SPRITESORT, 0 },