Gene Simmons has become the second member of Kiss to contract COVID-19, causing the rock band to postpone upcoming tour dates, it announced on Twitter on Tuesday.

In a statement saying Simmons, whose stage persona is “The Demon,” had tested positive for the coronavirus, Kiss announced that its next four shows would be postponed.

The band plans to return to the road on Sept. 9, assuming no further infections develop.

“The band and crew will remain at home and isolate for the next 10 days,” the statement read.

We are postponing the next four tour dates. All previously purchased tickets will be honored for the new dates once announced. More information will be emailed to ticketholders directly. pic.twitter.com/b28fmrhWIe

— KISS (@kiss) August 31, 2021

Simmons is described as having mild symptoms.

Last week, the “Rock and Roll All Nite” singers postponed their Thursday show after the band’s co-founder Paul Stanley received his own positive COVID-19 diagnosis.

All members of the band have been vaccinated against COVID-19, Kiss wrote in a statement on its website when Stanley became ill.

Stanley has since recovered, writing on Twitter, “My COVID symptoms were MILD compared to many others and let me tell you… It kicked my ass.”

My COVID symptoms were MILD compared to many others and let me tell you… It kicked my ass. It’s over now. pic.twitter.com/8HDMjKZT37

— Paul Stanley (@PaulStanleyLive) August 31, 2021