diff --git a/docs/数据科学/Data100.en.md b/docs/数据科学/Data100.en.md
index 930a0490..8eceee35 100644
--- a/docs/数据科学/Data100.en.md
+++ b/docs/数据科学/Data100.en.md
@@ -3,7 +3,7 @@
 ## Description
 
 - Offered by: UC Berkeley
-- Prerequisites: CS61A，Linear Algebra
+- Prerequisites: CS61A, Linear Algebra
 - Programming Languages: Python
 - Difficulty: 🌟🌟🌟
 - Class Hour: 80 hours