diff --git a/etcdctl/ctlv3/command/error.go b/etcdctl/ctlv3/command/error.go
index 3188cd5e4..314b07f05 100644
--- a/etcdctl/ctlv3/command/error.go
+++ b/etcdctl/ctlv3/command/error.go
@@ -34,7 +34,7 @@ const (
 )
 
 func ExitWithError(code int, err error) {
-	fmt.Fprintln(os.Stderr, "Error: ", err)
+	fmt.Fprintln(os.Stderr, "Error:", err)
 	if cerr, ok := err.(*client.ClusterError); ok {
 		fmt.Fprintln(os.Stderr, cerr.Detail())
 	}