diff --git a/commands/config.go b/commands/config.go
index 59ddd13972..429ffbb56d 100644
--- a/commands/config.go
+++ b/commands/config.go
@@ -21,7 +21,7 @@ type ErrCertInvalid struct {
 
 func (e ErrCertInvalid) Error() string {
 	return fmt.Sprintf(`There was an error validating certificates for host %q: %s
-You can attempt to regenerate them using 'docker-machine regenerate-certs name'.
+You can attempt to regenerate them using 'docker-machine regenerate-certs [name]'.
 Be advised that this will trigger a Docker daemon restart which will stop running containers.
 `, e.hostURL, e.wrappedErr)
 }