diff --git a/client.go b/client.go
index dab09ea9..4bd98f62 100644
--- a/client.go
+++ b/client.go
@@ -112,7 +112,7 @@ func Dial(
 		tlsConf:    tlsConf,
 		config:     clientConfig,
 		version:    version,
-		logger:     utils.DefaultLogger,
+		logger:     utils.DefaultLogger.WithPrefix("client"),
 	}
 
 	c.logger.Infof("Starting new connection to %s (%s -> %s), source connection ID %s, destination connection ID %s, version %s", hostname, c.conn.LocalAddr(), c.conn.RemoteAddr(), c.srcConnID, c.destConnID, c.version)
diff --git a/h2quic/client.go b/h2quic/client.go
index 40980882..af4ad11a 100644
--- a/h2quic/client.go
+++ b/h2quic/client.go
@@ -77,7 +77,7 @@ func newClient(
 		opts:          opts,
 		headerErrored: make(chan struct{}),
 		dialer:        dialer,
-		logger:        utils.DefaultLogger,
+		logger:        utils.DefaultLogger.WithPrefix("client"),
 	}
 }
 
diff --git a/h2quic/server.go b/h2quic/server.go
index a2412bd1..857211d2 100644
--- a/h2quic/server.go
+++ b/h2quic/server.go
@@ -90,7 +90,7 @@ func (s *Server) serveImpl(tlsConfig *tls.Config, conn net.PacketConn) error {
 	if s.Server == nil {
 		return errors.New("use of h2quic.Server without http.Server")
 	}
-	s.logger = utils.DefaultLogger
+	s.logger = utils.DefaultLogger.WithPrefix("server")
 	s.listenerMutex.Lock()
 	if s.closed {
 		s.listenerMutex.Unlock()
diff --git a/integrationtests/tools/proxy/proxy.go b/integrationtests/tools/proxy/proxy.go
index d12a3bae..d0bd9710 100644
--- a/integrationtests/tools/proxy/proxy.go
+++ b/integrationtests/tools/proxy/proxy.go
@@ -134,7 +134,7 @@ func NewQuicProxy(local string, version protocol.VersionNumber, opts *Opts) (*Qu
 		dropPacket:  packetDropper,
 		delayPacket: packetDelayer,
 		version:     version,
-		logger:      utils.DefaultLogger,
+		logger:      utils.DefaultLogger.WithPrefix("proxy"),
 	}
 
 	p.logger.Debugf("Starting UDP Proxy %s <-> %s", conn.LocalAddr(), raddr)
diff --git a/server.go b/server.go
index 31b7911c..02a9d077 100644
--- a/server.go
+++ b/server.go
@@ -110,7 +110,7 @@ func Listen(conn net.PacketConn, tlsConf *tls.Config, config *Config) (Listener,
 		sessionQueue:              make(chan Session, 5),
 		errorChan:                 make(chan struct{}),
 		supportsTLS:               supportsTLS,
-		logger:                    utils.DefaultLogger,
+		logger:                    utils.DefaultLogger.WithPrefix("server"),
 	}
 	if supportsTLS {
 		if err := s.setupTLS(); err != nil {