diff --git a/pkg/util/config/config.go b/pkg/util/config/config.go
index 72731442c..f38dc9b1c 100644
--- a/pkg/util/config/config.go
+++ b/pkg/util/config/config.go
@@ -71,7 +71,7 @@ type Config struct {
 	WatchedNamespace string `name:"watched_namespace"` // special values: "*" means 'watch all namespaces', the empty string "" means 'watch a namespace where operator is deployed to'
 	EtcdHost         string `name:"etcd_host" default:"etcd-client.default.svc.cluster.local:2379"`
 	DockerImage      string `name:"docker_image" default:"registry.opensource.zalan.do/acid/spiloprivate-9.6:1.2-p4"`
-	// re-use one account for both Spilo pods and the operator; this grants extra privileges to pods
+	// default name `operator` enables backward compatibility with the older ServiceAccountName field
 	PodServiceAccountName       string `name:"pod_service_account_name" default:"operator"`
 	PodServiceAccountDefinition string `name:"pod_service_account_definition" default:"apiVersion: v1\nkind: ServiceAccount\nmetadata:\n  name: operator\n"`
 	DbHostedZone                string `name:"db_hosted_zone" default:"db.example.com"`