From Longman Dictionary of Contemporary Englishthere is no mistaking somebody/somethingthere is no mistaking somebody/somethingRECOGNIZEused to say that you are certain about something There’s no mistaking whose children they are – they all look just like Joe. → mistake
Examples from the Corpus
there is no mistaking somebody/something• There is no mistaking Hall's books as anything other than romantic fiction.• If all goes well, Beech Road will start at 2-1 or less at Cheltenham as there is no mistaking his superiority.• But there is no mistaking the fact that the First Division door has been left ajar.• Some of the gaps must be due to chance, but there is no mistaking the insularity of interest which these volumes display. 