diff --git a/cmd/etcd.go b/cmd/etcd.go
index 40284689..157f1273 100644
--- a/cmd/etcd.go
+++ b/cmd/etcd.go
@@ -30,7 +30,7 @@ func EtcdCommand() cli.Command {
 		},
 		cli.BoolFlag{
 			Name:  "s3",
-			Usage: "Enabled backup to s3, set true or false",
+			Usage: "Enabled backup to s3",
 		},
 		cli.StringFlag{
 			Name:  "s3-endpoint",