diff --git a/VI. Deploying to the cloud/52. Google App Engine.md b/VI. Deploying to the cloud/52. Google App Engine.md
index e2d70d4..71c01cb 100644
--- a/VI. Deploying to the cloud/52. Google App Engine.md	
+++ b/VI. Deploying to the cloud/52. Google App Engine.md	
@@ -1,3 +1,3 @@
 ### 52. Google App Engine
 
-Google App Engine跟Servlet 2.5 API是有联系的，所以在不修改的情况系你是不能部署一个Spring应用的。具体查看本指南的[Servlet 2.5章节](http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#howto-servlet-2-5)。
+Google App Engine跟Servlet 2.5 API是有联系的，所以在不修改的情况系你是不能部署一个Spring应用的。具体查看本指南的[Servlet 2.5章节](../IX. ‘How-to’ guides/74.5. Deploying a WAR in an Old (Servlet 2.5) Container.md)。