diff --git a/src/Cedar/Admin.c b/src/Cedar/Admin.c
index 65703810..59c05939 100644
--- a/src/Cedar/Admin.c
+++ b/src/Cedar/Admin.c
@@ -10171,6 +10171,8 @@ UINT StGetProtoOptions(ADMIN *a, RPC_PROTO_OPTIONS *t)
 	UINT ret = ERR_NO_ERROR;
 	LIST *options;
 
+	SERVER_ADMIN_ONLY;
+
 	if (proto == NULL)
 	{
 		return ERR_NOT_SUPPORTED;