During filming, Robertson found out he won the Best Actor Oscar for "Charly". He had not insisted contractually that he could return for the Oscar ceremony so Frank Sinatra accepted it for him. "There was no flap", he said later. "If the absence was anybody's fault it was my own.": He complained a year later, that it only would have taken two days out of the production schedule and that he had offered to pay production costs but was refused as "a matter of ego".