Fix Travis build again
Fix Travis build again

raphaelm/opacclient,opacapp/opacclient,ruediger-w/opacclient,opacapp/opacclient,johan12345/opacclient,raphaelm/opacclient,ruediger-w/opacclient,opacapp/opacclient,johan12345/opacclient,opacapp/opacclient,johan12345/opacclient,ruediger-w/opacclient,johan12345/opacclient,raphaelm/opacclient,ruediger-w/opacclient,johan12345/opacclient,ruediger-w/opacclient,opacapp/opacclient