diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c
index 4fd86891fadb..3f16777278bf 100644
--- a/sys/dev/md/md.c
+++ b/sys/dev/md/md.c
@@ -811,7 +811,6 @@ mddetach(int unit, struct proc *p)
 	case MD_SWAP:
 	case MD_MALLOC:
 	case MD_PRELOAD:
-	case MD_PRELOAD_COMPRESSED:
 		return (mddestroy(sc, p));
 	default:
 		return (EOPNOTSUPP);