diff --git a/include/libc/libc_fcntl.h b/include/libc/libc_fcntl.h
index 342e4ef5ced1e788f7d2eebdf6aba9043e5ae975..6d6f8ee6d7e3ad975e8a1c1a316ebf0b2a4d10b3 100644
--- a/include/libc/libc_fcntl.h
+++ b/include/libc/libc_fcntl.h
@@ -4,6 +4,14 @@
 #ifndef LIBC_FCNTL_H__
 #define LIBC_FCNTL_H__
 
+#ifdef RT_USING_NEWLIB
+#include <fcntl.h>
+
+#ifndef O_NONBLOCK
+#define O_NONBLOCK    04000
+#endif
+
+#else
 #define O_RDONLY         00
 #define O_WRONLY         01
 #define O_RDWR           02
@@ -53,5 +61,7 @@
 #define F_GETOWN_EX 16
 
 #define F_GETOWNER_UIDS 17
+#endif
 
 #endif
+