@@ -516,7 +516,7 @@ func convertDeployMode(mode string, replicas *uint64) (swarm.ServiceMode, error)

 			return serviceMode, fmt.Errorf("replicas can only be used with replicated mode")

 		}

 		serviceMode.Global = &swarm.GlobalService{}

-	case "replicated":

+	case "replicated", "":

 		serviceMode.Replicated = &swarm.ReplicatedService{Replicas: replicas}

 	default:

 		return serviceMode, fmt.Errorf("Unknown mode: %s", mode)