diff --git a/pkg/controller/certificates/rootcacertpublisher/metrics.go b/pkg/controller/certificates/rootcacertpublisher/metrics.go
index 83081d32e53..d3eb1e4f23d 100644
--- a/pkg/controller/certificates/rootcacertpublisher/metrics.go
+++ b/pkg/controller/certificates/rootcacertpublisher/metrics.go
@@ -37,7 +37,7 @@ var (
 			Help:           "Number of namespace syncs happened in root ca cert publisher.",
 			StabilityLevel: metrics.ALPHA,
 		},
-		[]string{"namespace", "code"},
+		[]string{"code"},
 	)
 	syncLatency = metrics.NewHistogramVec(
 		&metrics.HistogramOpts{
@@ -47,19 +47,19 @@ var (
 			Buckets:        metrics.ExponentialBuckets(0.001, 2, 15),
 			StabilityLevel: metrics.ALPHA,
 		},
-		[]string{"namespace", "code"},
+		[]string{"code"},
 	)
 )
 
-func recordMetrics(start time.Time, ns string, err error) {
+func recordMetrics(start time.Time, err error) {
 	code := "500"
 	if err == nil {
 		code = "200"
 	} else if se, ok := err.(*apierrors.StatusError); ok && se.Status().Code != 0 {
 		code = strconv.Itoa(int(se.Status().Code))
 	}
-	syncLatency.WithLabelValues(ns, code).Observe(time.Since(start).Seconds())
-	syncCounter.WithLabelValues(ns, code).Inc()
+	syncLatency.WithLabelValues(code).Observe(time.Since(start).Seconds())
+	syncCounter.WithLabelValues(code).Inc()
 }
 
 var once sync.Once
diff --git a/pkg/controller/certificates/rootcacertpublisher/metrics_test.go b/pkg/controller/certificates/rootcacertpublisher/metrics_test.go
index 3979b00b787..38cbc93ef96 100644
--- a/pkg/controller/certificates/rootcacertpublisher/metrics_test.go
+++ b/pkg/controller/certificates/rootcacertpublisher/metrics_test.go
@@ -44,7 +44,7 @@ func TestSyncCounter(t *testing.T) {
 			want: `
 # HELP root_ca_cert_publisher_sync_total [ALPHA] Number of namespace syncs happened in root ca cert publisher.
 # TYPE root_ca_cert_publisher_sync_total counter
-root_ca_cert_publisher_sync_total{code="200",namespace="test-ns"} 1
+root_ca_cert_publisher_sync_total{code="200"} 1
 				`,
 		},
 		{
@@ -56,7 +56,7 @@ root_ca_cert_publisher_sync_total{code="200",namespace="test-ns"} 1
 			want: `
 # HELP root_ca_cert_publisher_sync_total [ALPHA] Number of namespace syncs happened in root ca cert publisher.
 # TYPE root_ca_cert_publisher_sync_total counter
-root_ca_cert_publisher_sync_total{code="404",namespace="test-ns"} 1
+root_ca_cert_publisher_sync_total{code="404"} 1
 				`,
 		},
 		{
@@ -68,7 +68,7 @@ root_ca_cert_publisher_sync_total{code="404",namespace="test-ns"} 1
 			want: `
 # HELP root_ca_cert_publisher_sync_total [ALPHA] Number of namespace syncs happened in root ca cert publisher.
 # TYPE root_ca_cert_publisher_sync_total counter
-root_ca_cert_publisher_sync_total{code="500",namespace="test-ns"} 1
+root_ca_cert_publisher_sync_total{code="500"} 1
 				`,
 		},
 		{
@@ -80,14 +80,14 @@ root_ca_cert_publisher_sync_total{code="500",namespace="test-ns"} 1
 			want: `
 # HELP root_ca_cert_publisher_sync_total [ALPHA] Number of namespace syncs happened in root ca cert publisher.
 # TYPE root_ca_cert_publisher_sync_total counter
-root_ca_cert_publisher_sync_total{code="500",namespace="test-ns"} 1
+root_ca_cert_publisher_sync_total{code="500"} 1
 				`,
 		},
 	}
 
 	for _, tc := range testCases {
 		t.Run(tc.desc, func(t *testing.T) {
-			recordMetrics(time.Now(), "test-ns", tc.err)
+			recordMetrics(time.Now(), tc.err)
 			defer syncCounter.Reset()
 			if err := testutil.GatherAndCompare(legacyregistry.DefaultGatherer, strings.NewReader(tc.want), tc.metrics...); err != nil {
 				t.Fatal(err)
diff --git a/pkg/controller/certificates/rootcacertpublisher/publisher.go b/pkg/controller/certificates/rootcacertpublisher/publisher.go
index b7e3d80533c..a044779bdb7 100644
--- a/pkg/controller/certificates/rootcacertpublisher/publisher.go
+++ b/pkg/controller/certificates/rootcacertpublisher/publisher.go
@@ -182,7 +182,7 @@ func (c *Publisher) processNextWorkItem() bool {
 func (c *Publisher) syncNamespace(ns string) (err error) {
 	startTime := time.Now()
 	defer func() {
-		recordMetrics(startTime, ns, err)
+		recordMetrics(startTime, err)
 		klog.V(4).Infof("Finished syncing namespace %q (%v)", ns, time.Since(startTime))
 	}()