diff --git a/ebook/13.5.md b/ebook/13.5.md
index f8f80988..b433d12f 100644
--- a/ebook/13.5.md
+++ b/ebook/13.5.md
@@ -124,7 +124,7 @@ DeleteController
 	}
 	
 	func (this *DeleteController) Get() {
-		id, _ := strconv.Atoi(this.Ctx.Params[":id"])
+		id, _ := strconv.Atoi(this.Ctx.Input.Params[":id"])
 		blog := GetBlog(id int)
 		this.Data["Post"] = blog
 		models.DelBlog(blog)