diff --git a/ChangeLog b/ChangeLog
index 804c3e4b09..52e19bbd36 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Nov 11 23:54:51 2013  Tanaka Akira  <akr@fsij.org>
+
+	* ext/socket/init.c (cloexec_accept): Fix a compile error on
+	  Debian GNU/kFreeBSD.  Consider HAVE_ACCEPT4 is defined
+	  but SOCK_CLOEXEC is not defined.
+
 Mon Nov 11 22:14:37 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* include/ruby/win32.h (rb_infinity_float): suppress overflow in
diff --git a/ext/socket/init.c b/ext/socket/init.c
index 4c1d17df98..9999c02969 100644
--- a/ext/socket/init.c
+++ b/ext/socket/init.c
@@ -488,7 +488,11 @@ cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len)
     if (address_len) len0 = *address_len;
 #ifdef HAVE_ACCEPT4
     if (try_accept4) {
-        ret = accept4(socket, address, address_len, SOCK_CLOEXEC);
+        int flags = 0;
+#ifdef SOCK_CLOEXEC
+        flags |= SOCK_CLOEXEC;
+#endif
+        ret = accept4(socket, address, address_len, flags);
         /* accept4 is available since Linux 2.6.28, glibc 2.10. */
         if (ret != -1) {
             if (ret <= 2)
diff --git a/version.h b/version.h
index 9cb5beff44..cfc84cdf5b 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.0.0"
 #define RUBY_RELEASE_DATE "2013-11-11"
-#define RUBY_PATCHLEVEL 344
+#define RUBY_PATCHLEVEL 345
 
 #define RUBY_RELEASE_YEAR 2013
 #define RUBY_RELEASE_MONTH 11