diff --git a/lib/krb5/mk_priv.c b/lib/krb5/mk_priv.c
index aef1e0929..a1a9ea4df 100644
--- a/lib/krb5/mk_priv.c
+++ b/lib/krb5/mk_priv.c
@@ -138,7 +138,7 @@ krb5_mk_priv(krb5_context context,
 
     ret = krb5_data_copy(outbuf, buf + buf_size - len, len);
     if (ret) {
-	krb5_set_error_string (context, "malloc: out of memory");
+	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
 	free(buf);
 	return ENOMEM;
     }