@@ -96,7 +96,12 @@ func (cli *DockerCli) call(method, path string, data interface{}, passAuthInfo b

 		if strings.Contains(err.Error(), "connection refused") {

 			return nil, -1, ErrConnectionRefused

 		}

-		return nil, -1, err

+

+		if cli.tlsConfig == nil {

+			return nil, -1, fmt.Errorf("%v. Are you trying to connect to a TLS-enabled daemon without TLS?", err)

+		}

+		return nil, -1, fmt.Errorf("An error occurred trying to connect: %v", err)

+

 	}

 	if resp.StatusCode < 200 || resp.StatusCode >= 400 {