diff --git a/readme.txt b/readme.txt
index d5fa3441d..3f805caf4 100644
--- a/readme.txt
+++ b/readme.txt
@@ -39,7 +39,9 @@ NOTE:
    develop gitee : https://gitee.com/hermanchen82/mpp
 5. Commit message format should base on https://keepachangelog.com/en/1.0.0/
 
-More document can be found at http://opensource.rock-chips.com/wiki_Mpp
+More documentation can be found in the developer guides:
+  English: doc/Rockchip_Developer_Guide_MPP_EN.md
+  Chinese: doc/Rockchip_Developer_Guide_MPP_CN.md
 
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