diff --git a/kexgexc.c b/kexgexc.c
index 0d07f73..f2be35a 100644
--- a/kexgexc.c
+++ b/kexgexc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kexgexc.c,v 1.27 2018/02/07 02:06:51 jsing Exp $ */
+/* $OpenBSD: kexgexc.c,v 1.29 2018/12/27 03:25:25 djm Exp $ */
 /*
  * Copyright (c) 2000 Niels Provos.  All rights reserved.
  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
@@ -222,8 +222,8 @@
 	hashlen = sizeof(hash);
 	if ((r = kexgex_hash(
 	    kex->hash_alg,
-	    kex->client_version_string,
-	    kex->server_version_string,
+	    kex->client_version,
+	    kex->server_version,
 	    sshbuf_ptr(kex->my), sshbuf_len(kex->my),
 	    sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
 	    server_host_key_blob, sbloblen,