diff --git a/ChangeLog b/ChangeLog
index 798301fe..624d8489 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-06-04  James Youngman  <jay@gnu.org>
 
+	gnulib already defines O_CLOEXEC.
+	* lib/fdleak.c: gnulib's fcntl.h always defines O_CLOEXEC, so
+	don't define it here.
+
 	Add internationalisation support to bigram but not regexprops.
 	* locate/bigram.c: Use libintl.h.
 	(main): Call bindtextdomain.
diff --git a/lib/fdleak.c b/lib/fdleak.c
index 05ad2fc7..f3666662 100644
--- a/lib/fdleak.c
+++ b/lib/fdleak.c
@@ -59,10 +59,6 @@ static int *non_cloexec_fds;
 static size_t num_cloexec_fds;
 
 
-#if !defined(O_CLOEXEC)
-#define O_CLOEXEC 0
-#endif
-
 /* Determine the value of the largest open fd, on systems that
  * offer /proc/self/fd. */
 static int