diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 55b6ca6..c434fde 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -131,8 +131,7 @@
 	for (i = 0; i < groups ; i++)
 		if (!gid_eq(cred->uc_gids[i], GROUP_AT(acred->group_info, i)))
 			return 0;
-	if (groups < NFS_NGROUPS &&
-	    cred->uc_gids[groups] != INVALID_GID)
+	if (groups < NFS_NGROUPS && gid_valid(cred->uc_gids[groups]))
 		return 0;
 	return 1;
 }
@@ -161,7 +160,7 @@
 	*p++ = htonl((u32) cred->uc_uid);
 	*p++ = htonl((u32) cred->uc_gid);
 	hold = p++;
-	for (i = 0; i < 16 && cred->uc_gids[i] != INVALID_GID; i++)
+	for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
 		*p++ = htonl((u32) cred->uc_gids[i]);
 	*hold = htonl(p - hold - 1);		/* gid array length */
 	*base = htonl((p - base - 1) << 2);	/* cred length */