diff --git a/src/shared_func.h b/src/shared_func.h
index d935d07..2aba889 100644
--- a/src/shared_func.h
+++ b/src/shared_func.h
@@ -730,7 +730,7 @@ int fd_add_flags(int fd, int adding_flags);
  *  	fd: the fd to set
  *  return: error no , 0 success, != 0 fail
 */
-#define set_nonblock(fd) fd_add_flags(fd, O_NONBLOCK)
+#define set_nonblock(fd) fd_add_flags(fd, O_NONBLOCK | FD_CLOEXEC)
 
 /** set fd FD_CLOEXEC flags
  *  parameters:
diff --git a/src/sockopt.c b/src/sockopt.c
index 0f0b38d..8d04797 100644
--- a/src/sockopt.c
+++ b/src/sockopt.c
@@ -2126,7 +2126,7 @@ int tcpsetnonblockopt(int fd)
 		return errno != 0 ? errno : EACCES;
 	}
 
-	if (fcntl(fd, F_SETFL, flags | (O_NONBLOCK | O_CLOEXEC)) < 0)
+	if (fcntl(fd, F_SETFL, flags | (O_NONBLOCK | FD_CLOEXEC)) < 0)
 	{
 		logError("file: "__FILE__", line: %d, " \
 			"fcntl failed, errno: %d, error info: %s.", \