diff --git a/en/03.0.md b/en/03.0.md
index 11ee047c..51063e2b 100644
--- a/en/03.0.md
+++ b/en/03.0.md
@@ -1,4 +1,4 @@
-#3 Web foundation
+# 3 Web foundation
 
 The reason you are reading this book is that you want to learn to build web applications in Go. As I've said before, Go provides many powerful packages like `http`. These packages can help you a lot when trying to build web applications. I'll teach you everything you need to know in the following chapters, and we'll talk about some concepts of the web and how to run web applications in Go in this chapter.