The Premier League champions finally lifted some of the gloom that had descended on the Etihad Stadium as they swept aside Nottingham Forest to win 3-0 on Wednesday.
It was City's first victory since October, putting an end to a dramatic loss of form that had seen them lose six of their previous seven games in all competitions.
With four of those defeats having come in the Premier League, many observers had written off their hopes of winning an unprecedented fifth successive title but Doku has been ignoring any criticism.
"No, we just don't listen to the outside," said the Belgian, who scored and assisted against Forest.
"At the end of the day, when everything goes well they're going to hype you up. When everything goes bad you're the worst.
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