diff --git a/lib/pingback.js b/lib/pingback.js
index 9334cfd..9e550e5 100644
--- a/lib/pingback.js
+++ b/lib/pingback.js
@@ -10,12 +10,10 @@ const https = require('https');
 const querystring = require('querystring');
 
 module.exports = (config) => {
-	const cfg = config;
-	const url = cfg.url;
-	const parsedUrl = URL.parse(url);
-	const client = parsedUrl.protocol === 'https:' ? https : http;
+	const url = config.url;
+	const parsedUrl = !url ? null : URL.parse(url);
 
-	if (!parsedUrl.hostname) {
+	if (!parsedUrl || !parsedUrl.hostname) {
 		return {
 			ok: false,
 			error: 'No hostname found for ' + url,
@@ -49,8 +47,8 @@ module.exports = (config) => {
 					'Content-Length': postData.length
 				}
 			};
-	
-			var req = client.request(httpOptions, (res) => {
+			const client = parsedUrl.protocol === 'https:' ? https : http;
+			const req = client.request(httpOptions, (res) => {
 				let data = '';
 				res.setEncoding('utf8');