diff --git a/ssherr.h b/ssherr.h
index a307816..c0b5921 100644
--- a/ssherr.h
+++ b/ssherr.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ssherr.h,v 1.4 2017/05/07 23:15:59 djm Exp $	*/
+/*	$OpenBSD: ssherr.h,v 1.5 2017/09/12 06:32:08 djm Exp $	*/
 /*
  * Copyright (c) 2011 Damien Miller
  *
@@ -78,6 +78,7 @@
 #define SSH_ERR_CONN_CORRUPT			-54
 #define SSH_ERR_PROTOCOL_ERROR			-55
 #define SSH_ERR_KEY_LENGTH			-56
+#define SSH_ERR_NUMBER_TOO_LARGE		-57
 
 /* Translate a numeric error code to a human-readable error string */
 const char *ssh_err(int n);