diff --git a/examples/shipping/main.go b/examples/shipping/main.go
index e348e46..8337d61 100644
--- a/examples/shipping/main.go
+++ b/examples/shipping/main.go
@@ -7,7 +7,6 @@
 	"net/http"
 	"os"
 	"os/signal"
-	"sync"
 	"syscall"
 	"time"
 
@@ -46,8 +45,7 @@
 	flag.Parse()
 
 	var logger log.Logger
-	logger = log.NewLogfmtLogger(os.Stderr)
-	logger = &serializedLogger{Logger: logger}
+	logger = log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr))
 	logger = log.With(logger, "ts", log.DefaultTimestampUTC)
 
 	var (
@@ -200,14 +198,3 @@
 		panic(err)
 	}
 }
-
-type serializedLogger struct {
-	mtx sync.Mutex
-	log.Logger
-}
-
-func (l *serializedLogger) Log(keyvals ...interface{}) error {
-	l.mtx.Lock()
-	defer l.mtx.Unlock()
-	return l.Logger.Log(keyvals...)
-}