Brian May, the lead guitarist of British rock band Queen, revealed Wednesday that he had a “minor stroke” last week, which caused him to temporarily lose control over his arm.

May, 77, said in a video on his website that he was doing “OK” but that he was “grounded” and advised not to drive, fly or do any activity which raises his heart rate too high.

“I’m here to bring you first of all some good news, I think, good news is that I can play guitar after the events of the last few days,” he said. “And I say this because it was in some doubt because that little health hiccup that I mentioned, happened about a week ago, and what they called it was a minor stroke and all of a sudden, out of the blue, I didn’t have any control over this arm.”