A council has apologised after a motorist was fined £50 for having a parking permit back to front.
The driver was in Spring Gardens car park in Buxton, Derbyshire, when a civil enforcement officer gave her a fine.
When challenged, the officer said High Peak Borough Council had ruled only one side of the permit was to be displayed.
The council has now said no such regulation exists and has waived the fine.
It has also offered to repay any others issued in similar circumstances.
The authority said the officer, employed by parking contractor APCOA, had simply made a mistake.
Emily Thrane, executive councillor for corporate services, said: "We and APCOA apologise unreservedly for this unfortunate mix-up.
"Steps have been taken to retrain the officer concerned and to ensure that an error of this nature does not happen again."
The permits allow holders to park free on any council car park off-peak on Monday to Saturday and all day on Sunday.