diff --git a/filesystem/dfs/filesystems/efsl/src/include/config.h b/filesystem/dfs/filesystems/efsl/src/include/config.h
index a2e3b56f32..2b945ab36f 100644
--- a/filesystem/dfs/filesystems/efsl/src/include/config.h
+++ b/filesystem/dfs/filesystems/efsl/src/include/config.h
@@ -1,6 +1,9 @@
 #ifndef __EFSL_CONFIG_H__
 #define __EFSL_CONFIG_H__
 
+/* include RT-Thread to import configuration */
+#include <rtthread.h>
+
 /* Hardware target
    ---------------