diff --git a/sendgrid/helpers/eventwebhook/__init__.py b/sendgrid/helpers/eventwebhook/__init__.py
index a44eb5b89..40b557818 100644
--- a/sendgrid/helpers/eventwebhook/__init__.py
+++ b/sendgrid/helpers/eventwebhook/__init__.py
@@ -33,7 +33,7 @@ def verify_signature(self, payload, signature, timestamp, public_key=None):
         """
         Verify signed event webhook requests.
 
-        :param payload: event payload in the request body
+        :param payload: event payload in the request body decoded using latin-1
         :type payload: string
         :param signature: value obtained from the 'X-Twilio-Email-Event-Webhook-Signature' header
         :type signature: string