Officials say they erred in issuing a violation to a Philadelphia building owner over a mural of Democratic presidential candidate Bernie Sanders.

Philly.com reports the city Department of Licenses and Inspections on Tuesday said the mural of the Vermont senator at 22nd and Catherine streets is political speech, not an advertisement, so the mural can stay.

Developer Max Glass received a letter from the department Monday saying the mural was a painted advertisement, lacked the required permit and must be removed.

The mural dubbed, "Philly the Bern," was finished on March 11 and depicts Sanders with Philadelphia's skyline. Glass says he hopes the mural increases public showing of support for Sander's presidential candidacy.