diff --git a/docs/QuickStart.md b/docs/QuickStart.md
index fcfd18df..0404f0ec 100644
--- a/docs/QuickStart.md
+++ b/docs/QuickStart.md
@@ -470,7 +470,7 @@ engine.ClearCache(new(User))
 
 缓存的实现原理如下图所示：
 
-![cache design](https://github.com/lunny/xorm/tree/master/docs/cache_design.png)
+![cache design](https://raw.github.com/lunny/xorm/master/docs/cache_design.png)
 
 ## 12.Examples