diff --git a/ssh-gss.h b/ssh-gss.h
index 6593e42..e0905b3 100644
--- a/ssh-gss.h
+++ b/ssh-gss.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-gss.h,v 1.12 2017/06/24 06:34:38 djm Exp $ */
+/* $OpenBSD: ssh-gss.h,v 1.13 2018/07/10 06:43:52 djm Exp $ */
 /*
  * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
  *
@@ -118,7 +118,8 @@
 void ssh_gssapi_build_ctx(Gssctxt **);
 void ssh_gssapi_delete_ctx(Gssctxt **);
 OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
-void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);
+void ssh_gssapi_buildmic(struct sshbuf *, const char *,
+    const char *, const char *);
 int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *);
 
 /* In the server */