diff --git a/inc/fdb_cfg.h b/inc/fdb_cfg.h
index 62e817d..7c31eea 100644
--- a/inc/fdb_cfg.h
+++ b/inc/fdb_cfg.h
@@ -18,10 +18,16 @@
 
 #include <rtthread.h>
 #ifdef RT_USING_DFS
-#include <dfs_posix.h>
-#endif
 
-#define FDB_PRINT(...)             rt_kprintf(__VA_ARGS__)
+#if RTTHREAD_VERSION >= 40100
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <unistd.h>
+#else // RTTHREAD_VERSION < 40100
+#include <dfs_posix.h>
+#endif // RTTHREAD_VERSION
+#endif // RT_USING_DFS
 
+#define FDB_PRINT(...) rt_kprintf(__VA_ARGS__)
 
 #endif /* _FDB_CFG_H_ */
diff --git a/src/fdb_cmd.c b/src/fdb_cmd.c
index f2f01f4..b8b7f41 100644
--- a/src/fdb_cmd.c
+++ b/src/fdb_cmd.c
@@ -13,6 +13,7 @@
 
 #include <flashdb.h>
 #include <rtthread.h>
+#include <string.h>
 
 #if defined(RT_USING_FINSH) && defined(FINSH_USING_MSH) && defined(FDB_USING_KVDB)
 #include <finsh.h>