The re-drafted script was sent to Bowie, who found that it lacked humor and considered withdrawing his involvement in the project as a result. To ensure Bowie's involvement, Henson asked Jones to "do a bit more" to the script in order to make it more humorous. May met with Henson several months prior to the start of filming in April 1985, and was asked to polish the script. May's changes "humanized the characters" and pleased Henson to the extent that they were incorporated into the film's shooting script.