diff --git a/bsp/simulator/rtconfig.h b/bsp/simulator/rtconfig.h
index 5e0f9ead12fa8d3a5d26f75de135a426d90f36e3..c01930fe59888d0baa4856e6103d2c241d393205 100755
--- a/bsp/simulator/rtconfig.h
+++ b/bsp/simulator/rtconfig.h
@@ -10,6 +10,8 @@
 #undef RT_USING_MINILIBC
 #define NORESOURCE  //RT_VESRION in winuser.h
 #define _CRT_ERRNO_DEFINED  //errno macro redefinition
+#define _INC_WTIME_INL//dfs_elm.c time.h conflicts with wtime.inl
+#define _INC_TIME_INL //dfs_elm.c time.h conflicts with wtime.inl
 
 /* disable some warning in MSC */
 #pragma warning(disable:4273)	/* to ignore: warning C4273: inconsistent dll linkage */
diff --git a/components/dfs/filesystems/elmfat/dfs_elm.c b/components/dfs/filesystems/elmfat/dfs_elm.c
index 4a69b6a64f4be801f1b55d3ebaad3f311b73e922..4f24a0cd72faf8564fb988b3b98e2c85c4a1ada9 100644
--- a/components/dfs/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/filesystems/elmfat/dfs_elm.c
@@ -17,12 +17,11 @@
  * 2013-03-01     aozima       fixed the stat(st_mtime) issue.
  */
 
-#include <string.h>
-#include <time.h>
-
 #include <rtthread.h>
 #include "ffconf.h"
 #include "ff.h"
+#include <string.h>
+#include <time.h>
 
 /* ELM FatFs provide a DIR struct */
 #define HAVE_DIR_STRUCTURE