diff --git a/daemon.c b/daemon.c
index f9d25e718757b243388a6146cc5d8de344fcbc54..4003b5618e37061d93a731d38ac3cc7ac99763d5 100644
--- a/daemon.c
+++ b/daemon.c
@@ -205,7 +205,7 @@ daemon_setup()
      * want to keep the file descriptor in case of an exec().
      */
     fflush(fp);
-    fcntl(fd, F_SETFD, (long) 1);
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
     PRIV_END
 
     return;