diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b8b73aa..5e06eee 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -65,7 +65,7 @@ We welcome direct contributions to the open-source-library-data-collector code b
 
 ##### Prerequisites #####
 
-- The SendGrid Service, starting at the [free level](https://sendgrid.com/free?source=open-source-data-collector))
+- The SendGrid Service, starting at the [free level](https://sendgrid.com/free?source=open-source-data-collector)
 - [virtualenv](https://pypi.python.org/pypi/virtualenv)
 - [mysql](https://www.mysql.com)