diff --git a/ChangeLog b/ChangeLog
index 8c6685a3..fd1d9e5a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-02-12  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Renamed HAVE_SOCKADDR_SIN_LEN as HAVE_SOCKADDR_IN_SIN_LEN
+	* configure.ac
+	
 2009-02-12  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Added a check to see struct sockaddr_in has sin_len member.
diff --git a/config.h.in b/config.h.in
index 37937a1f..1bc86166 100644
--- a/config.h.in
+++ b/config.h.in
@@ -322,8 +322,8 @@
 /* Define to 1 if you have the `snprintf' function. */
 #undef HAVE_SNPRINTF
 
-/* Define to 1 if struct sockaddr has sin_len member. */
-#undef HAVE_SOCKADDR_SIN_LEN
+/* Define to 1 if struct sockaddr_in has sin_len member. */
+#undef HAVE_SOCKADDR_IN_SIN_LEN
 
 /* Define to 1 if you have the `socket' function. */
 #undef HAVE_SOCKET
diff --git a/configure b/configure
index 5a2bb4f4..86e3f632 100755
--- a/configure
+++ b/configure
@@ -22101,7 +22101,7 @@ echo "${ECHO_T}$ac_cv_member_struct_sockaddr_in_sin_len" >&6; }
 if test $ac_cv_member_struct_sockaddr_in_sin_len = yes; then
 
 cat >>confdefs.h <<\_ACEOF
-#define HAVE_SOCKADDR_SIN_LEN 1
+#define HAVE_SOCKADDR_IN_SIN_LEN 1
 _ACEOF
 
 fi
diff --git a/configure.ac b/configure.ac
index 772fa131..fdc9ae5b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -330,8 +330,8 @@ case "$target" in
 esac
 
 AC_CHECK_MEMBER([struct sockaddr_in.sin_len],
-                [AC_DEFINE([HAVE_SOCKADDR_SIN_LEN],[1],
-                  [Define to 1 if struct sockaddr has sin_len member.])],
+                [AC_DEFINE([HAVE_SOCKADDR_IN_SIN_LEN],[1],
+                  [Define to 1 if struct sockaddr_in has sin_len member.])],
                 [],
                 [[#include <netinet/in.h>]])