Pope Francis doesn’t like whiners.

In case this was unclear from his straightforward homilies imploring Christians not to be grumpy, the sign on his apartment door confirms it.

Literally, it translates: “It is forbidden to complain,” according to Italian source La Stampa.

It goes on to explain in Italian that “offenders are subjected to a syndrome of victimism that lowers the mood and the ability to solve problems.” And that “Sanction is doubled if the offense is committed in the presence of children.”

“To become the best of yourself, you must focus on your own potential and not on your own limits, so stop complaining and act to change your life for the better,” the sign advises.

An elderly priest and friend of the Pope snapped a picture of the sign, which was a gift to Francis from a psychologist.

Pope Francis originally wanted to place the sign on the door of his office, where he often receives visitors.

Deciding that maybe set the wrong tone, the Pope decided to hang it on his apartment door at Santa Marta. Despite technically being on vacation, the Pope is still at his Vatican residence, working on some curial appointments among other things.

Pope Francis has often implored Christians to be joyful witnesses rather than gloomy ones.

In 2013, he compared sad Christians to “pickled peppers.”

“Sometimes these melancholic Christians’ faces have more in common with pickled peppers than the joy of having a beautiful life,” he said.

In 2014, he said that there’s no such thing as a “sad or gloomy-faced saints.”

In April of this year, the Pope told priests that the message of the Gospel “can never be gloomy or indifferent, for it expresses a joy that is completely personal.”