A Douglas County judge Thursday ordered an 18-year-old Lawrence man to serve more than seven years in prison for a June robbery of a Kansas University student in the Oread neighborhood.

But District Judge Sally Pokorny told Jermel Fleming he could earn credit on good behavior to be released from prison in just more than five years.

A jury in January convicted Fleming of aggravated robbery, aggravated burglary, kidnapping, conspiracy to commit aggravated robbery and theft. Pokorny sentenced Fleming to serve 88 months for the aggravated robbery count, and she ordered him to concurrently serve his lesser sentences on the other counts.

Prosecutors asked for a 10-year sentence. Defense attorney Branden Smith asked for probation, saying there were problems with the state’s case and that Fleming had strong family support, but Pokorny and prosecutors said Fleming already had three prior felony convictions.

Prosecutors alleged Fleming planned the robbery — which included four other juveniles — wore a mask over his face and took a sawed-off shotgun into the apartment before demanding money and drugs from the victim, who was struck during the robbery at an apartment in the 900 block of Tennessee Street.

Assistant District Attorney Mark Simpson said Fleming orchestrated the robbery by having another person ask the victim whether he could buy marijuana from him.

Smith said Fleming has retained an attorney to appeal his conviction.