diff --git a/docs/软件工程/CS169.en.md b/docs/软件工程/CS169.en.md
index a7f8c052..a6d139f2 100644
--- a/docs/软件工程/CS169.en.md
+++ b/docs/软件工程/CS169.en.md
@@ -17,8 +17,8 @@ This course is available on [Edx](https://www.edx.org/), an online education pla
 - Course Website: <http://www.saasbook.info/courses>
 - Recordings: refer to the course website.
 - Textbook: [Software as a service](https://github.com/PKUFlyingPig/CS169-Software-Engineering/blob/master/saasbook.pdf)
-- Assignments: refer to the course website
+- Assignments: refer to the course website.
 
 ## Personal Resources
 
-All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/CS169-Software-Engineering - GitHub](https://github.com/PKUFlyingPig/CS169-Software-Engineering)
+All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/CS169-Software-Engineering - GitHub](https://github.com/PKUFlyingPig/CS169-Software-Engineering).