diff --git a/diffweb b/diffweb.sh
similarity index 93%
rename from diffweb
rename to diffweb.sh
index 14ceaad..1b790a0 100644
--- a/diffweb
+++ b/diffweb.sh
@@ -1,4 +1,6 @@
-# diffweb - Notify user if a website has changed
+#!/bin/bash
+
+# diffweb - Checks a website for changes
 # Usage: diffweb https://domain.tld
 # Author: Justin Oros
 # Revised: 2020 JUNE 25