diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index db0034796c46..7fce04e1d4a8 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ip_input.c,v 1.371 2018/02/05 15:18:10 maxv Exp $	*/
+/*	$NetBSD: ip_input.c,v 1.372 2018/02/05 15:23:14 maxv Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.371 2018/02/05 15:18:10 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.372 2018/02/05 15:23:14 maxv Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -158,16 +158,10 @@ __KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.371 2018/02/05 15:18:10 maxv Exp $");
 #endif
 #endif
 
-#ifndef	IPSENDREDIRECTS
-#define	IPSENDREDIRECTS	1
-#endif
-
-#ifndef IPMTUDISCTIMEOUT
 #define IPMTUDISCTIMEOUT (10 * 60)	/* as per RFC 1191 */
-#endif
 
 int ipforwarding = IPFORWARDING;
-int ipsendredirects = IPSENDREDIRECTS;
+int ipsendredirects = 1;
 int ip_defttl = IPDEFTTL;
 int ip_forwsrcrt = 0;
 int ip_directedbcast = 0;