diff --git a/zh/04.2.md b/zh/04.2.md
index d494afcd..df9bcde4 100644
--- a/zh/04.2.md
+++ b/zh/04.2.md
@@ -97,7 +97,7 @@ if m, _ := regexp.MatchString(`^(1[3|4|5|8][0-9]\d{4,8})$`, r.Form.Get("mobile")
 slice:=[]string{"apple","pear","banane"}
 
 v := r.Form.Get("fruit")
-for _, item range slice {
+for _, item := range slice {
 	if item == v {
 		return true
 	}