diff --git a/4.5.md b/4.5.md
index 2b308ed1..765e3861 100644
--- a/4.5.md
+++ b/4.5.md
@@ -22,7 +22,7 @@
 	</body>
 	</html>
 
-在服务器端，我们增加我们增加一个handlerFunc:
+在服务器端，我们增加一个handlerFunc:
 
 	http.HandleFunc("/upload", upload)