diff --git a/src/foremast/elb/format_listeners.py b/src/foremast/elb/format_listeners.py
index <HASH>..<HASH> 100644
--- a/src/foremast/elb/format_listeners.py
+++ b/src/foremast/elb/format_listeners.py
@@ -134,6 +134,7 @@ def format_cert_name(env='', account='', region='', certificate=None):
     Args:
         env (str): Account environment name
         account (str): Account number for ARN
+        region (str): AWS Region.
         certificate (str): Name of SSL certificate
 
     Returns:
@@ -165,6 +166,7 @@ def generate_custom_cert_name(env='', region='', account='', certificate=None):
 
     Args:
         env (str): Account environment name
+        region (str): AWS Region.
         account (str): Account number for ARN.
         certificate (str): Name of SSL certificate.
 
diff --git a/tests/elb/test_elb.py b/tests/elb/test_elb.py
index <HASH>..<HASH> 100644
--- a/tests/elb/test_elb.py
+++ b/tests/elb/test_elb.py
@@ -17,8 +17,6 @@
 import json
 from unittest import mock
 
-import io
-
 from foremast.elb import SpinnakerELB
 from foremast.elb.format_listeners import format_cert_name, format_listeners
 from foremast.elb.splay_health import splay_health
Fixed docstrings and unneeded imports