Filthy-minded motorists trying to slip a profane licence plate by the California Department of Motor Vehicles are out of luck, after the agency spelled out on its website that the use of the number “69” will not be tolerated on personalized plates.

The government website says the number “69” is “reserved only for 1969 year model vehicles that the license plates will be placed upon,” adding the department will refuse any configuration of numbers and letters that may carry connotations “offensive to good taste and decency,” reports Inverse.

The website further goes on to highlight that plates containing terms of “lust or depravity” will not be allowed. Aw, darn.

It’s not clear if any specific action inspired the California government’s stance, but given the evolution of social norms and public protest, it seems possible the restriction of lewd messaging on personalized plates may someday be challenged.