The police knocked Keanu Reeves‘ front door after receiving a call for a wellness check on a woman… but when the actor answered, they discovered it was all apparently a mix-up or prank.

Law enforcement told TMZ … cops recently responded to Keanu’s Los Angeles-area home after someone called police concerned about a 27-year-old woman.

Police say the caller told them they hadn’t spoken to their friend in a while and were worried about her…even providing her full date of birth and the type of car she was in. she was driving.

We’re told the caller asked the police to do a wellness check to make sure the woman was ok – but when the cops arrived at the house and knocked on the door they were surprised to see Keanu respond.

Police say they told Keanu how they ended up on his doorstep, but the ‘John Wick’ star had no knowledge of the woman in question … and told cops she was definitely not living with him.