diff --git a/plugin/traffic/xds/client.go b/plugin/traffic/xds/client.go
index 5302f1ffc..4aed20fba 100644
--- a/plugin/traffic/xds/client.go
+++ b/plugin/traffic/xds/client.go
@@ -190,7 +190,7 @@ func (c *Client) receive(stream adsStream) error {
 				a.SetClusterLoadAssignment(cluster.GetName(), nil)
 			}
 			log.Debugf("Cluster discovery processed with %d resources, version %q and nonce %q", len(resp.GetResources()), c.Version(cdsURL), c.Nonce(cdsURL))
-			ClusterGauge.WithLabelValues().Set(float64(len(resp.GetResources())))
+			ClusterGauge.Set(float64(len(resp.GetResources())))
 			// set our local administration and ack the reply. Empty version would signal NACK.
 			c.SetNonce(cdsURL, resp.GetNonce())
 			c.SetVersion(cdsURL, resp.GetVersionInfo())
diff --git a/plugin/traffic/xds/metrics.go b/plugin/traffic/xds/metrics.go
index 0d9175497..25a46fb56 100644
--- a/plugin/traffic/xds/metrics.go
+++ b/plugin/traffic/xds/metrics.go
@@ -8,10 +8,10 @@ import (
 
 var (
 	// ClusterGauge is the number of clusters we are currently tracking.
-	ClusterGauge = prometheus.NewGaugeVec(prometheus.GaugeOpts{
+	ClusterGauge = prometheus.NewGauge(prometheus.GaugeOpts{
 		Namespace: plugin.Namespace,
 		Subsystem: "traffic",
 		Name:      "clusters_tracked",
 		Help:      "Gauge of tracked clusters.",
-	}, []string{""})
+	})
 )