diff --git a/collectd/files/plugin/check_openstack_api.py b/collectd/files/plugin/check_openstack_api.py
index 9d2ef59..44a5b2b 100644
--- a/collectd/files/plugin/check_openstack_api.py
+++ b/collectd/files/plugin/check_openstack_api.py
@@ -69,6 +69,7 @@
                 self.logger.notice(
                     "No check found for service '%s', skipping it" % name)
                 status = self.UNKNOWN
+                check = {}
             else:
                 check = self.CHECK_MAP[name]
                 url = self._service_url(service['url'], check['path'])