diff --git a/docs/软件工程/6031.en.md b/docs/软件工程/6031.en.md
index ac46b75e..644b227b 100644
--- a/docs/软件工程/6031.en.md
+++ b/docs/软件工程/6031.en.md
@@ -30,4 +30,4 @@ In the 2016 spring, the course open-sourced all of its programming assignments,
 
 All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/MIT6.031 --- GitHub](https://github.com/PKUFlyingPig/MIT6.031-software-construction)
 
-@pengzhangzhi completed the assignments and took some notes, maintained at [pengzhangzhi/self-taught-CS/Software Construction - Github](https://github.com/pengzhangzhi/self-taught-CS/tree/main/Software%20Construction)。
+@pengzhangzhi completed the assignments and took some notes, maintained at [pengzhangzhi/self-taught-CS/Software Construction - Github](https://github.com/pengzhangzhi/self-taught-CS/tree/main/Software%20Construction)