diff --git a/docs/编程入门/CS110L.en.md b/docs/编程入门/CS110L.en.md
index 7d8e96eb..b3a4baa1 100644
--- a/docs/编程入门/CS110L.en.md
+++ b/docs/编程入门/CS110L.en.md
@@ -17,7 +17,7 @@ The latter part of this course focuses on the topic of concurrency, where you wi
 ## Course Resources
 
 - Course Website: https://reberhardt.com/cs110l/spring-2020/
-- Recordings: <https://youtu.be/j7AQrtLevUE<https://youtu.be/j7AQrtLevUE>
+- Recordings: <https://youtu.be/j7AQrtLevUE>
 - Textbook: None
 - Assignments：6 Labs, 2 Projects, the course website has specific requirements. There are two interesting Projects for the course, which are
   1. Implement a GDB-like debugger in Rust
@@ -25,4 +25,4 @@ The latter part of this course focuses on the topic of concurrency, where you wi
 
 ## Personal Resources
 
-All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/CS110L - GitHub](https://github.com/PKUFlyingPig/CS110L)
\ No newline at end of file
+All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/CS110L - GitHub](https://github.com/PKUFlyingPig/CS110L)