diff --git a/pkg/util/config/config.go b/pkg/util/config/config.go
index edee72de4..2c83b36b3 100644
--- a/pkg/util/config/config.go
+++ b/pkg/util/config/config.go
@@ -67,7 +67,7 @@ type Config struct {
 	Resources
 	Auth
 	Scalyr
-	WatchedNamespace         string            `name:"watched_namespace"` // may be "*", meaning watch all namespaces
+	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"`
 	ServiceAccountName       string            `name:"service_account_name" default:"operator"`