diff --git a/docs/编译原理/SJTU-Compilers.en.md b/docs/编译原理/SJTU-Compilers.en.md
index 51abea4c..8ba2b71b 100644
--- a/docs/编译原理/SJTU-Compilers.en.md
+++ b/docs/编译原理/SJTU-Compilers.en.md
@@ -17,7 +17,7 @@ In this course, you will learn how to use frameworks such as `flexc++`, `Bisonc+
 - Course Website: <https://ipads.se.sjtu.edu.cn/courses/compilers/index.shtml>
 - Slides: See the course website
 - Framework Code: <https://ipads.se.sjtu.edu.cn:2020/compilers-2024/compilers-2024> (If unable to access, you can use other similar and maintained repositories, such as <https://gitee.com/east-china-normal-university_ttb_cs/tiger-compiler-25sp>)
-- Course Textbook: "Tiger Book" (Modern Compiler Implementation in C)<https://ipads.se.sjtu.edu.cn/courses/compilers/textbook/TigerBook-English.pdf>
+- Course Textbook: "Tiger Book" (Modern Compiler Implementation in C) <https://ipads.se.sjtu.edu.cn/courses/compilers/textbook/TigerBook-English.pdf>
 - 2 Quizzes + 6 Labs
     - Lab 1: Straight-line Program Interpreter
     - Lab 2: Lexical Analysis