diff --git a/use_cases/aws.md b/use_cases/aws.md
index 0044acabf..2e63bd1f5 100644
--- a/use_cases/aws.md
+++ b/use_cases/aws.md
@@ -118,7 +118,7 @@ import os
 from sendgrid.helpers.mail import (From, To, PlainTextContent, HtmlContent, Mail)
 
 def handler(event, context):
-    sendgrid_client = sendgrid.SendGridAPIClient(api_key=os.environ.get('SENDGRID_API_KEY'))
+    sendgrid_client = sendgrid.SendGridAPIClient(os.environ.get('SENDGRID_API_KEY'))
     from_email = From("test@example.com")
     to_email = To("test@example.com")
     subject = "Sending with Twilio SendGrid is Fun"
diff --git a/use_cases/error_handling.md b/use_cases/error_handling.md
index 84b7d339b..5ef2e2dac 100644
--- a/use_cases/error_handling.md
+++ b/use_cases/error_handling.md
@@ -11,7 +11,7 @@ There are also email specific exceptions located [here](https://github.com/sendg
   from sendgrid.helpers.mail import (From, To, Subject, PlainTextContent, HtmlContent, Mail)
   from python_http_client import exceptions
 
-  sendgrid_client = SendGridAPIClient(api_key=os.environ.get('SENDGRID_API_KEY'))
+  sendgrid_client = SendGridAPIClient(os.environ.get('SENDGRID_API_KEY'))
   from_email = From("dx@sendgrid.com")
   to_email = To("elmer.thomas@sendgrid.com")
   subject = Subject("Sending with Twilio SendGrid is Fun")