diff --git a/controllers/eventsource/resource.go b/controllers/eventsource/resource.go
index 3a92d4ce22..2c36b2b5cd 100644
--- a/controllers/eventsource/resource.go
+++ b/controllers/eventsource/resource.go
@@ -389,7 +389,6 @@ func buildService(args *AdaptorArgs) (*corev1.Service, error) {
 		ObjectMeta: metav1.ObjectMeta{
 			Name:      fmt.Sprintf("%s-eventsource-svc", eventSource.Name),
 			Namespace: eventSource.Namespace,
-			Labels:    mergeLabels(args.EventSource.Labels, args.Labels),
 		},
 		Spec: corev1.ServiceSpec{
 			Ports:     ports,
@@ -399,15 +398,21 @@ func buildService(args *AdaptorArgs) (*corev1.Service, error) {
 		},
 	}
 
+	labels := mergeLabels(args.EventSource.Labels, args.Labels)
+	annotations := make(map[string]string)
+
 	if args.EventSource.Spec.Service.Metadata != nil {
 		if args.EventSource.Spec.Service.Metadata.Labels != nil {
-			svc.ObjectMeta.SetLabels(args.EventSource.Spec.Service.Metadata.Labels)
+			labels = mergeLabels(labels, args.EventSource.Spec.Service.Metadata.Labels)
 		}
 		if args.EventSource.Spec.Service.Metadata.Annotations != nil {
-			svc.ObjectMeta.SetAnnotations(args.EventSource.Spec.Service.Metadata.Annotations)
+			annotations = mergeLabels(annotations, args.EventSource.Spec.Service.Metadata.Annotations)
 		}
 	}
 
+	svc.ObjectMeta.SetLabels(labels)
+	svc.ObjectMeta.SetAnnotations(annotations)
+
 	if err := controllerscommon.SetObjectMeta(eventSource, svc, v1alpha1.SchemaGroupVersionKind); err != nil {
 		return nil, err
 	}