diff --git a/notes/计算机操作系统 - 目录.md b/notes/计算机操作系统 - 目录.md
index f3054311..9676b283 100644
--- a/notes/计算机操作系统 - 目录.md	
+++ b/notes/计算机操作系统 - 目录.md	
@@ -14,7 +14,7 @@
 - Bryant, R. E., & O’Hallaron, D. R. (2004). 深入理解计算机系统.
 - 史蒂文斯. UNIX 环境高级编程 [M]. 人民邮电出版社, 2014.
 - [Operating System Notes](https://applied-programming.github.io/Operating-Systems-Notes/)
-- [Operating-System Structures](https://www.cs.uic.edu/\~jbell/CourseNotes/OperatingSystems/2_Structures.html)
+- [Operating-System Structures](https://www.cs.uic.edu/~jbell/CourseNotes/OperatingSystems/2_Structures.html)
 - [Processes](http://cse.csusb.edu/tongyu/courses/cs460/notes/process.php)
 - [Inter Process Communication Presentation[1]](https://www.slideshare.net/rkolahalam/inter-process-communication-presentation1)
 - [Decoding UCS Invicta – Part 1](https://blogs.cisco.com/datacenter/decoding-ucs-invicta-part-1)