diff --git a/rt-thread-version/rt-thread-standard/application-note/system/rtboot/an0028-rtboot.md b/rt-thread-version/rt-thread-standard/application-note/system/rtboot/an0028-rtboot.md
index 01eb28c85cb92db92f08708b4805efd9fa4257db..106c396f103fd3cfb855a33d1a5c512fc88532d5 100644
--- a/rt-thread-version/rt-thread-standard/application-note/system/rtboot/an0028-rtboot.md
+++ b/rt-thread-version/rt-thread-standard/application-note/system/rtboot/an0028-rtboot.md
@@ -197,6 +197,7 @@ Bootloader 在线获取地址： http://iot.rt-thread.com
 ```
     config BSP_USING_ON_CHIP_FLASH
         bool "Enable on-chip FLASH"
+        select RT_USING_FAL
         default n
 ```