diff --git a/src/ChangeLog b/src/ChangeLog
index 2749399d392..1ec84a72d2d 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2013-12-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix pipe bug with OS X emacs --daemon (Bug#16262).
+	* emacs.c (main) [DAEMON_MUST_EXEC]: Clear the close-on-exec
+	flags on the daemon pipe ends before execing.
+
 2013-12-28  Eli Zaretskii  <eliz@gnu.org>
 
 	* w32fns.c (Fx_create_frame): Error out if called from a TTY
diff --git a/src/emacs.c b/src/emacs.c
index 35e8ff330c9..b5bd3129ad2 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -1099,6 +1099,8 @@ Using an Emacs configured with --with-x-toolkit=lucid does not have this problem
 
             argv[skip_args] = fdStr;
 
+	    fcntl (daemon_pipe[0], F_SETFD, 0);
+	    fcntl (daemon_pipe[1], F_SETFD, 0);
             execvp (argv[0], argv);
 	    emacs_perror (argv[0]);
 	    exit (errno == ENOENT ? EXIT_ENOENT : EXIT_CANNOT_INVOKE);