diff --git a/13.md b/13.md
index 44ad48b8..031c9d40 100644
--- a/13.md
+++ b/13.md
@@ -14,5 +14,5 @@
 
 ## links
    * [目录](<preface.md>)
-   * 上一章: [第十一章总结](<11.4.md>)
-   * 下一节: [应用日志](<12.1.md>)
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+   * 上一章: [第十二章总结](<12.5.md>)
+   * 下一节: [项目规划](<13.1.md>)
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