diff --git a/sys/kern/kern_opt.c b/sys/kern/kern_opt.c
index e722aa7e5d15..08b04b22af59 100644
--- a/sys/kern/kern_opt.c
+++ b/sys/kern/kern_opt.c
@@ -1,5 +1,37 @@
+/*-
+ * Copyright (c) 1997 Bruce D. Evans
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
 #include "opt_defunct.h"
 
+#ifdef ARP_PROXYALL
+#warning "obsolete option ARP_PROXYALL - use `sysctl -w net.link.ether.inet.proxyall=1'"
+#endif
+
 #ifdef CHILD_MAX
 #warning "obsolete option CHILD_MAX - use /etc/login.conf"
 #endif
@@ -12,10 +44,6 @@
 #warning "obsolete option GATEWAY - use `sysctl -w net.inet.ip.forwarding=1'"
 #endif
 
-#ifdef ARP_PROXYALL
-#warning "obsolete option ARP_PROXYALL - use `sysctl -w net.link.ether.inet.proxyall=1'"
-#endif
-
 #ifdef OPEN_MAX
 #warning "obsolete option OPEN_MAX - use /etc/login.conf"
 #endif