Noted actor Rishi Kapoor says he felt uncomfortable calling his co-star Prithviraj Sukumaran by his first name because it is the name of his grandfather, the yesteryear thespian Prithviraj Kapoor. "I was uncomfortable working with Prithviraj for the first two days as it was my grandfather's name. But later, it was ok," Rishi Kapoor told reporters at the promotional event of the film. Rishi Kapoor and Prithviraj will be playing cops in Aurangzeb. Kapoor was all praise for the co-star Arjun Kapoor. "He is very focused as an actor. His passion towards acting was seen in his work. Passion for work is very important. Hope he does good work and make your parents proud and happy," he said.