diff --git a/components/libc/newlib/sys/fcntl.h b/components/libc/newlib/sys/fcntl.h
index a65fb5257e5194c98de00b6186feb11c6fe633b4..499c67260e09356a5107da2173a02811b31e04bf 100644
--- a/components/libc/newlib/sys/fcntl.h
+++ b/components/libc/newlib/sys/fcntl.h
@@ -1,15 +1,16 @@
-#ifndef __RTT_FCNTL_H__
-#define __RTT_FCNTL_H__
-
-/* Operation flags */
-#define O_RDONLY		0x0000000
-#define O_WRONLY		0x0000001
-#define O_RDWR			0x0000002
-#define O_ACCMODE		0x0000003
-#define O_CREAT			0x0000100
-#define O_EXCL			0x0000200
-#define O_TRUNC			0x0001000
-#define O_APPEND		0x0002000
-#define O_DIRECTORY		0x0200000
-
-#endif
+#ifndef __RTT_FCNTL_H__
+#define __RTT_FCNTL_H__
+
+/* Operation flags */
+#define O_RDONLY        0x0000000
+#define O_WRONLY        0x0000001
+#define O_RDWR          0x0000002
+#define O_ACCMODE       0x0000003
+#define O_CREAT         0x0000100
+#define O_EXCL          0x0000200
+#define O_TRUNC         0x0001000
+#define O_APPEND        0x0002000
+#define O_DIRECTORY     0x0200000
+#define O_BINARY        0x0008000
+
+#endif