diff --git a/compat.h b/compat.h
index eba32caa..1c279fb2 100644
--- a/compat.h
+++ b/compat.h
@@ -1,4 +1,4 @@
-/* $Id: compat.h,v 1.30 2010-10-27 21:40:03 nicm Exp $ */
+/* $Id: compat.h,v 1.31 2010-11-11 20:45:49 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -159,6 +159,7 @@ typedef uint64_t u_int64_t;
 #endif
 
 #ifndef HAVE_BZERO
+#undef bzero
 #define bzero(buf, len) memset(buf, 0, len);
 #endif
 
@@ -202,6 +203,7 @@ int	 	 daemon(int, int);
 
 #ifndef HAVE_FORKPTY
 /* forkpty.c */
+#include <sys/ioctl.h>
 pid_t		 forkpty(int *, char *, struct termios *, struct winsize *);
 #endif
 
diff --git a/configure b/configure
index cc520ec8..3f9500fc 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #!/bin/sh
-# $Id: configure,v 1.57 2010-11-11 20:37:53 nicm Exp $
+# $Id: configure,v 1.58 2010-11-11 20:45:49 nicm Exp $
 #
 # Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
 #
@@ -131,7 +131,6 @@ EOF
 # ------------------------------------------------------------------------------
     AIX)
 	cat <<EOF >>$CONFIG_H
-#define HAVE_BZERO
 #define HAVE_SETENV
 #define HAVE_STDINT_H
 EOF