diff --git a/osm_mon/collector/vnf_collectors/openstack.py b/osm_mon/collector/vnf_collectors/openstack.py
index 514245b..6aedf88 100644
--- a/osm_mon/collector/vnf_collectors/openstack.py
+++ b/osm_mon/collector/vnf_collectors/openstack.py
@@ -148,7 +148,10 @@
                     if type(self.backend) is PrometheusTSBDBackend:
                         openstack_metric_name = self.backend.map_metric(metric_name)
                     else:
-                        openstack_metric_name = METRIC_MAPPINGS[metric_name]
+                        try:
+                            openstack_metric_name = METRIC_MAPPINGS[metric_name]
+                        except KeyError:
+                            continue
                     metric_type = self._get_metric_type(metric_name)
                     try:
                         resource_id = self._get_resource_uuid(