diff --git a/lib/krb5/mk_rep.c b/lib/krb5/mk_rep.c
index 458eeafb7..9d9d3e3d5 100644
--- a/lib/krb5/mk_rep.c
+++ b/lib/krb5/mk_rep.c
@@ -84,7 +84,7 @@ krb5_mk_rep(krb5_context context,
 				      &auth_context->local_seqnumber);
 	ALLOC(body.seq_number, 1);
 	if (body.seq_number == NULL) {
-	    krb5_set_error_string (context, "malloc: out of memory");
+	    krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
 	    free_EncAPRepPart(&body);
 	    return ENOMEM;
 	}