diff --git a/src/ptserver/ptprocs.c b/src/ptserver/ptprocs.c
index f663b221dc..5eb1ac7fec 100644
--- a/src/ptserver/ptprocs.c
+++ b/src/ptserver/ptprocs.c
@@ -1787,10 +1787,6 @@ listSuperGroups(struct rx_call *call, afs_int32 aid, prlist *alist,
     if (!pr_noAuth && restrict_anonymous && *cid == ANONYMOUSID)
 	ABORT_WITH(tt, PRPERM);
 
-    code = ubik_SetLock(tt, 1, 1, LOCKREAD);
-    if (code)
-	ABORT_WITH(tt, code);
-
     temp = FindByID(tt, aid);
     if (!temp)
 	ABORT_WITH(tt, PRNOENT);