The verdict on those charges is expected on July 29.
Sboui also has been charged with undermining public morals and desecrating a cemetery and has been in prison for two months with no trial date set. A judge dismissed the more serious charge of belonging to a criminal organization, one of her defense lawyers, Mokhtar Jannene said Friday.
A committee formed to support Sboui also issued on Friday a message purported to be from Sboui, saying she wasn't afraid.
"It does not matter to me if I am held in prison for a long time," she wrote. "To be behind bars is not as hard as to be outside watching a religious dictatorship take over Tunisia."
The case of Sboui, who originally went by the pseudonym Amina Tyler, has attracted international attention, not least from fellow Femen members, three of whom staged a topless protest in front of the Tunis courthouse on May 29 and called for her freedom.
The women, one German and two French, were arrested and sentenced to four months in prison for offending public morals and threatening public order. Their sentences were later suspended in an appeal, and they were allowed to return to Europe.