diff --git a/02 HTTP.md b/02 HTTP.md
index dffab051..857f876b 100644
--- a/02 HTTP.md	
+++ b/02 HTTP.md	
@@ -149,7 +149,7 @@ Whilst URL parameters are used to define unique URLS to identify online resource
 2. Now change the URL to `/hello/John%20Doe?format=upper`.
 	1. Notice that the same data has been displayed just the format has changed.
 
-Open the `index.js` file. The route is between lines 37-43.
+Open the `index.js` file. The route is between lines 43-47.
 
 1. Notice that the query string(s) are not part of the route.
 2. The query string comprises name-value pairs.
diff --git a/exercises/02_http/01_url/index.js b/exercises/02_http/01_url/index.js
old mode 100644
new mode 100755
index 393d04d3..bb117e94
--- a/exercises/02_http/01_url/index.js
+++ b/exercises/02_http/01_url/index.js
@@ -1,7 +1,5 @@
 #!/usr/bin/env node
 
-'use strict'
-
 /* IMPORTING MODULES */
 const Koa = require('koa')
 const Router = require('koa-router')
@@ -25,9 +23,11 @@ function hello(ctx) {
 }
 
 router.get('/', hello)
+//base case
 
 router.get('/anon', ctx => {
 	ctx.body = 'Hello World'
+	//anon case
 })
 
 router.get('/books/:index', ctx => {
@@ -43,6 +43,7 @@ router.get('/name', ctx => ctx.body = JSON.stringify(ctx.query))
 router.get('/hello/:name', ctx => {
 	let myname = ctx.params.name
 	if(ctx.query.format === 'upper') myname = myname.toUpperCase()
+		//only applies uppercase if formatting query exists
 	ctx.body = `hello ${myname}`
 })