diff --git a/zaza/openstack/charm_tests/policyd/tests.py b/zaza/openstack/charm_tests/policyd/tests.py
index 49d03a9..9e92d96 100644
--- a/zaza/openstack/charm_tests/policyd/tests.py
+++ b/zaza/openstack/charm_tests/policyd/tests.py
@@ -66,7 +66,7 @@ class PolicydTest(test_utils.OpenStackBaseTest):
     def _set_config_and_wait(self, state):
         s = "True" if state else "False"
         config = {"use-policyd-override": s}
-        logging.info("Setting config to", config)
+        logging.info("Setting config to {}".format(config))
         zaza_model.set_application_config(self.application_name, config)
         zaza_model.block_until_all_units_idle()