diff --git a/config.h.in b/config.h.in
index 606f513..87a5a7a 100644
--- a/config.h.in
+++ b/config.h.in
@@ -95,6 +95,9 @@
 /* if struct sockaddr_storage exists */
 #undef HAVE_SOCKADDR_STORAGE
 
+/* define if socklen_t is defined */
+#undef HAVE_SOCKLEN_T
+
 /* On solaris */
 #undef HAVE_SOLARIS
 
@@ -152,9 +155,6 @@
 /* define if your compiler has __attribute__ */
 #undef HAVE___ATTRIBUTE__
 
-/* Is the socklen_t data type defined? */
-#undef HAVE_SOCKLEN_T
-
 /* IPv6 */
 #undef INET6
 
diff --git a/configure.in b/configure.in
index 58e7011..938a0fd 100644
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,4 @@
-dnl @(#) $Header: /tcpdump/master/libpcap/configure.in,v 1.138.2.9 2008-03-14 09:13:33 guy Exp $ (LBL)
+dnl @(#) $Header: /tcpdump/master/libpcap/configure.in,v 1.138.2.10 2008-03-14 09:13:49 guy Exp $ (LBL)
 dnl
 dnl Copyright (c) 1994, 1995, 1996, 1997
 dnl	The Regents of the University of California.  All rights reserved.
@@ -6,7 +6,7 @@ dnl
 dnl Process this file with autoconf to produce a configure script.
 dnl
 
-AC_REVISION($Revision: 1.138.2.9 $)
+AC_REVISION($Revision: 1.138.2.10 $)
 AC_PREREQ(2.50)
 AC_INIT(pcap.c)
 
@@ -381,7 +381,7 @@ AC_TRY_COMPILE([
 	have_socklen_t=yes,
 	have_socklen_t=no)
 if test "x$have_socklen_t" = "xyes"; then
-	AC_DEFINE(HAVE_SOCKLEN_T, 1)
+	AC_DEFINE(HAVE_SOCKLEN_T, 1, [define if socklen_t is defined])
 fi
 AC_MSG_RESULT($have_socklen_t)