diff --git a/Prerequisites.md b/Prerequisites.md
index eef0fcb..549598b 100644
--- a/Prerequisites.md
+++ b/Prerequisites.md
@@ -34,6 +34,8 @@ to apply the proper permission to the folders. This also applies to the `docker-
 
 The PhantomJS key is set to `a-demo-key-with-low-quota-per-ip-address`. This demo key is limited to 100 requests per day.
 
-To set a different key feel free to add `-e PHANTOMJS_CLOUD_KEY='<INSERT YOUR PHANTOMJS KEY HERE>'` to thee docker command below.
+To set a different key add `-e PHANTOMJS_CLOUD_KEY='<YOUR PHANTOMJS KEY>'` to the 'docker run' command.
 
-For further configuration and toubleshotting regarding PhantomJS and Invoice Ninja [see documentation here](https://docs.invoiceninja.com/configure.html?#phantomjs).
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+Alternatively, you may add `PHANTOMJS_CLOUD_KEY= '<YOUR PHANTOMJS KEY>'` under the "environment" for invoiceninja to your docker-compose.yml file.  
+
+For further configuration and troubleshooting regarding PhantomJS and Invoice Ninja [see documentation here](https://docs.invoiceninja.com/configure.html?#phantomjs).
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