After the failure of this first attempt, Charles set about to try again. He had the term "proles" (offspring) inserted into his charters (it had not been in previous years), in a likely attempt to legitimize Bernard. In early 886 Charles met the new Pope Stephen V and probably negotiated for the recognition of his illegitimate son as heir. An assembly was planned for April and May of the following year at Waiblingen. Pope Stephen cancelled his planned attendance on 30 April 887. Nevertheless, at Waiblingen, Berengar, who after a brief feud with Liutward had lost the favour of the emperor, came in early May 887, made peace with the emperor and compensated for his actions of the previous year by dispensing great gifts.