A British television advert for a hair-loss treatment endorsed by Australian cricketer Shane Warne was found in breach of industry rules Wednesday.

According to a Reuters report, the Advertising Standards Authority (ASA) said the advert for Advanced Hair Studio was at fault because it had used a celebrity to endorse a treatment that involved medicine.

The text of the ad vocalized by Warne is in reference to Advanced Laser Therapy (ALT), which uses a medicine, minoxidil.

The ASA said readers could have inferred that Warne was endorsing ALT and ordered the company behind the advert to withdraw any mention of the treatment in adverts featuring Warne.