diff --git a/kex.h b/kex.h
index 0f67f59..800a692 100644
--- a/kex.h
+++ b/kex.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: kex.h,v 1.57 2013/11/02 21:59:15 markus Exp $ */
+/* $OpenBSD: kex.h,v 1.58 2013/11/07 11:58:27 dtucker Exp $ */
 
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
@@ -146,7 +146,7 @@
 };
 
 int	 kex_names_valid(const char *);
-char	*kex_alg_list(void);
+char	*kex_alg_list(char);
 
 Kex	*kex_setup(char *[PROPOSAL_MAX]);
 void	 kex_finish(Kex *);