diff --git a/components/dfs/filesystems/devfs/devfs.h b/components/dfs/filesystems/devfs/devfs.h
index ef320b78c85f98c29dc05e91a0629709c479ae3a..97b025634e21e26548e78f427b22535fe9061a74 100644
--- a/components/dfs/filesystems/devfs/devfs.h
+++ b/components/dfs/filesystems/devfs/devfs.h
@@ -27,5 +27,6 @@
 #include <rtthread.h>
 
 int devfs_init(void);
+void rt_console_init(const char* device_name);
 
 #endif
diff --git a/components/libc/newlib/libc.c b/components/libc/newlib/libc.c
index f7bb8e3f9b71acf573015f50835d4dc8705c670c..73270969b84748432198150a85f5045d19bfcbb8 100644
--- a/components/libc/newlib/libc.c
+++ b/components/libc/newlib/libc.c
@@ -9,6 +9,15 @@
 #include <pthread.h>
 #endif
 
+#ifdef RT_USING_DFS
+#include <dfs_posix.h>
+
+#ifdef RT_USING_DFS_DEVFS
+#include <devfs.h>
+#endif
+
+#endif
+
 void libc_system_init(const char* tty_name)
 {
 #ifdef RT_USING_DFS
@@ -18,13 +27,16 @@ void libc_system_init(const char* tty_name)
 #error Please enable devfs by defining RT_USING_DFS_DEVFS in rtconfig.h
 #endif
 
-	/* init console device */
+	/* initialize console device */
 	rt_console_init(tty_name);
 
 	/* open console as stdin/stdout/stderr */
 	fd = open("/dev/console", O_RDONLY, 0);	/* for stdin */
 	fd = open("/dev/console", O_WRONLY, 0);	/* for stdout */
 	fd = open("/dev/console", O_WRONLY, 0);	/* for stderr */
+	
+	/* skip warning */
+	fd = fd;
 #endif
 
 	/* set PATH and HOME */