diff --git a/components/dfs/src/dfs_select.c b/components/dfs/src/dfs_select.c
index ca9c549259..795b816354 100644
--- a/components/dfs/src/dfs_select.c
+++ b/components/dfs/src/dfs_select.c
@@ -12,7 +12,7 @@
 #include <dfs_posix.h>
 
 #include <poll.h>
-#include <dfs_select.h>
+#include <sys/select.h>
 
 #ifdef RT_USING_POSIX
 
diff --git a/components/lwp/lwp_syscall.c b/components/lwp/lwp_syscall.c
index d9112eed3e..f9bc84ea97 100644
--- a/components/lwp/lwp_syscall.c
+++ b/components/lwp/lwp_syscall.c
@@ -14,7 +14,7 @@
 #include <lwp_syscall.h>
 
 #include <poll.h>
-#include <dfs_select.h>
+#include <sys/select.h>
 
 #if (defined(RT_USING_SAL) && defined(SAL_USING_POSIX))
 #include <sys/socket.h>
diff --git a/components/net/sal_socket/SConscript b/components/net/sal_socket/SConscript
index cc7634f7d9..3903dce89a 100644
--- a/components/net/sal_socket/SConscript
+++ b/components/net/sal_socket/SConscript
@@ -26,9 +26,6 @@ if GetDepend('SAL_USING_POSIX'):
     CPPPATH += [cwd + '/include/dfs_net']
     src += Glob('socket/net_sockets.c')
     src += Glob('dfs_net/*.c')
-    
-    if not GetDepend('HAVE_SYS_SELECT_H'):
-        CPPPATH += [cwd + '/include/dfs_net/sys_select']
 
 if not GetDepend('HAVE_SYS_SOCKET_H'):
     CPPPATH += [cwd + '/include/socket/sys_socket']
diff --git a/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h b/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h
deleted file mode 100644
index f174bc6504..0000000000
--- a/components/net/sal_socket/include/dfs_net/sys_select/sys/select.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2015-05-02     Bernard      First version
- */
-
-#ifndef SELECT_H__
-#define SELECT_H__
-
-#include <dfs_select.h>
-
-#endif
diff --git a/examples/libc/termios_test.c b/examples/libc/termios_test.c
index f3a6ce3a1c..855bc82b96 100644
--- a/examples/libc/termios_test.c
+++ b/examples/libc/termios_test.c
@@ -16,7 +16,7 @@
 
 #if defined (RT_USING_POSIX)
     #include <dfs_posix.h>
-    #include <dfs_select.h>
+    #include <sys/select.h>
     #if defined (RT_USING_POSIX_TERMIOS)
         #include <termios.h>
     #else
diff --git a/examples/rt-link/rtlink_dev_example.c b/examples/rt-link/rtlink_dev_example.c
index d00f916efd..523b67ba53 100644
--- a/examples/rt-link/rtlink_dev_example.c
+++ b/examples/rt-link/rtlink_dev_example.c
@@ -48,7 +48,7 @@ static rt_err_t rtlink_dev_tx_done(rt_device_t dev, void *buffer)
 #ifdef RT_USING_POSIX
 #include <dfs_posix.h>
 #include <poll.h>
-#include <dfs_select.h>
+#include <sys/select.h>
 
 #define RTLINK01_PATH "/dev/rtlink01"
 int fd  = -1;