Reacting to the poster controversy of her upcoming movie "Madam Chief Minister", actor Richa Chadha on Friday said it was an "unintentional oversight" and it was regrettable.

The film``s poster, which was released on January 5, was slammed by many on social media for apparently showing the Dalit community in a stereotypical way as Chadha``s character is shown holding a broom in her hand.