there's no mistaking (someone or something)
Someone or something is clearly and easily recognizable or identifiable. Justine left this note: there's no mistaking her handwriting. You should see him standing next to the ticket desk at the station—he's wearing a bright pink fedora, so there's no mistaking him.
there’s no miˈstaking somebody/something
somebody/something is easy to recognize; something is obvious: There’s no mistaking her voice — she’s got a very strong Scottish accent.There’s no mistaking the new mood of optimism in the country.