diff --git a/molecule/ec2-centos-7/tests/test_default.py b/molecule/ec2-centos-7/tests/test_default.py
index f68c95d..cdf887f 100644
--- a/molecule/ec2-centos-7/tests/test_default.py
+++ b/molecule/ec2-centos-7/tests/test_default.py
@@ -25,4 +25,4 @@ def test_mosquitto_socket(host):
     inventory = yaml.load(open(host.backend.ansible_inventory))
     address = inventory['all']['hosts']['bind_host']['ansible_host']
     assert host.socket(
-        "tcp://{address}:8883".format(address=address).is_listening
+        "tcp://{address}:8883".format(address=address)).is_listening