diff --git a/eBook/09.11.md b/eBook/09.11.md
index 2f1fdde..578b1ea 100644
--- a/eBook/09.11.md
+++ b/eBook/09.11.md
@@ -47,7 +47,7 @@ url, error := urlshortenerSvc.Url.Get(shwortUrl).Do()
 
 返回的长地址便是转换前的原始地址。
 
-示例	9.9	[urlshortener.go](examples/chapter_9/urlshortener.go)
+示例	9.9	[urlshortener.go](examples/chapter_9/use_urlshortener.go)
 
 ```go
 package main