diff --git a/docs/数学进阶/numerical.en.md b/docs/数学进阶/numerical.en.md
index 8c3537e1..0bb8bf68 100644
--- a/docs/数学进阶/numerical.en.md
+++ b/docs/数学进阶/numerical.en.md
@@ -3,7 +3,7 @@
 ## Descriptions
 
 - Offered by: MIT
-- Prerequisites:Calculus, Linear Algebra, Probability theory
+- Prerequisites: Calculus, Linear Algebra, Probability theory
 - Programming Languages: Julia
 - Difficulty: 🌟🌟🌟🌟🌟
 - Class Hour: 150 hours