diff --git a/errors.go b/errors.go
index 05a83be..08bbc77 100644
--- a/errors.go
+++ b/errors.go
@@ -1,3 +1,11 @@
+//
+// Copyright (C) 2021 - 2022 Dmitry Kolesnikov
+//
+// This file may be modified and distributed under the terms
+// of the Apache License Version 2.0. See the LICENSE file for details.
+// https://github.com/fogfish/swarm
+//
+
 package swarm
 
 import "github.com/fogfish/faults"
diff --git a/examples/bytes/dequeue/bytes.go b/examples/bytes/dequeue/bytes.go
index bbf5c11..30487d2 100644
--- a/examples/bytes/dequeue/bytes.go
+++ b/examples/bytes/dequeue/bytes.go
@@ -10,6 +10,7 @@ package main
 
 import (
 	"log/slog"
+	"os"
 
 	"github.com/fogfish/swarm"
 	"github.com/fogfish/swarm/broker/sqs"
@@ -18,6 +19,16 @@ import (
 )
 
 func main() {
+	slog.SetDefault(
+		slog.New(
+			slog.NewTextHandler(os.Stdout,
+				&slog.HandlerOptions{
+					Level: slog.LevelDebug,
+				},
+			),
+		),
+	)
+
 	q := queue.Must(sqs.New("swarm-test", swarm.WithLogStdErr()))
 
 	go actor("user").handle(bytes.Dequeue(q, "User"))
diff --git a/examples/bytes/enqueue/bytes.go b/examples/bytes/enqueue/bytes.go
index a67b0b2..8a97a9b 100644
--- a/examples/bytes/enqueue/bytes.go
+++ b/examples/bytes/enqueue/bytes.go
@@ -31,9 +31,9 @@ func main() {
 
 	q := queue.Must(sqs.New("swarm-test", swarm.WithLogStdErr()))
 
-	user := queue.LogDeadLetters(bytes.Enqueue(q, "User"))
-	note := queue.LogDeadLetters(bytes.Enqueue(q, "Note"))
-	like := queue.LogDeadLetters(bytes.Enqueue(q, "Like"))
+	user := swarm.LogDeadLetters(bytes.Enqueue(q, "User"))
+	note := swarm.LogDeadLetters(bytes.Enqueue(q, "Note"))
+	like := swarm.LogDeadLetters(bytes.Enqueue(q, "Like"))
 
 	user <- []byte("user|some text by user")
 
diff --git a/examples/eventbridge/enqueue/eventbridge.go b/examples/eventbridge/enqueue/eventbridge.go
index b8bec35..9ec030a 100644
--- a/examples/eventbridge/enqueue/eventbridge.go
+++ b/examples/eventbridge/enqueue/eventbridge.go
@@ -35,9 +35,9 @@ func main() {
 		swarm.WithLogStdErr(),
 	))
 
-	user := queue.LogDeadLetters(queue.Enqueue[*User](q))
-	note := queue.LogDeadLetters(queue.Enqueue[*Note](q))
-	like := queue.LogDeadLetters(queue.Enqueue[*Like](q))
+	user := swarm.LogDeadLetters(queue.Enqueue[*User](q))
+	note := swarm.LogDeadLetters(queue.Enqueue[*Note](q))
+	like := swarm.LogDeadLetters(queue.Enqueue[*Like](q))
 
 	user <- &User{ID: "user", Text: "some text"}
 	note <- &Note{ID: "note", Text: "some text"}
diff --git a/examples/events/enqueue/events.go b/examples/events/enqueue/events.go
index 9ac2883..b5ff66c 100644
--- a/examples/events/enqueue/events.go
+++ b/examples/events/enqueue/events.go
@@ -49,10 +49,10 @@ func (EventNote) HKT2(*Note)           {}
 func main() {
 	q := queue.Must(sqs.New("swarm-test", swarm.WithLogStdErr()))
 
-	userCreated := queue.LogDeadLetters(events.Enqueue[*User, EventCreateUser](q))
-	userUpdated := queue.LogDeadLetters(events.Enqueue[*User, EventUpdateUser](q))
-	userRemoved := queue.LogDeadLetters(events.Enqueue[*User, EventRemoveUser](q))
-	note := queue.LogDeadLetters(events.Enqueue[*Note, EventNote](q))
+	userCreated := swarm.LogDeadLetters(events.Enqueue[*User, EventCreateUser](q))
+	userUpdated := swarm.LogDeadLetters(events.Enqueue[*User, EventUpdateUser](q))
+	userRemoved := swarm.LogDeadLetters(events.Enqueue[*User, EventRemoveUser](q))
+	note := swarm.LogDeadLetters(events.Enqueue[*Note, EventNote](q))
 
 	//
 	// Multiple channels emits events
diff --git a/examples/sqs/enqueue/sqs.go b/examples/sqs/enqueue/sqs.go
index 4855eff..f69a990 100644
--- a/examples/sqs/enqueue/sqs.go
+++ b/examples/sqs/enqueue/sqs.go
@@ -45,9 +45,9 @@ func main() {
 
 	q := queue.Must(sqs.New("swarm-test", swarm.WithLogStdErr()))
 
-	user := queue.LogDeadLetters(queue.Enqueue[*User](q))
-	note := queue.LogDeadLetters(queue.Enqueue[*Note](q))
-	like := queue.LogDeadLetters(queue.Enqueue[*Like](q))
+	user := swarm.LogDeadLetters(queue.Enqueue[*User](q))
+	note := swarm.LogDeadLetters(queue.Enqueue[*Note](q))
+	like := swarm.LogDeadLetters(queue.Enqueue[*Like](q))
 
 	user <- &User{ID: "user", Text: "some text by user"}
 
diff --git a/queue/dlq.go b/service.go
similarity index 89%
rename from queue/dlq.go
rename to service.go
index a110842..c35a907 100644
--- a/queue/dlq.go
+++ b/service.go
@@ -6,7 +6,7 @@
 // https://github.com/fogfish/swarm
 //
 
-package queue
+package swarm
 
 import (
 	"log/slog"
@@ -16,7 +16,7 @@ import (
 
 // Consumes dead letter messages
 //
-// queue.LogDeadLetters(queue.Enqueue(...))
+// swarm.LogDeadLetters(queue.Enqueue(...))
 func LogDeadLetters[T any](out chan<- T, err <-chan T) chan<- T {
 	pipe.ForEach[T](err, func(t T) {
 		slog.Error("Fail to emit", "object", t)