Fox has canceled two prime-time series that failed to gain momentum with viewers. EW.com's Inside TV reports that the network dumped the reality shows "I Wanna Marry Harry" and "Riot."

Both shows have delivered puny 0.4 average ratings in the key demo of viewers 18-49 for the past two weeks.

"'Harry,' where single American women competed for a man they were not-so-subtly misled into thinking was Prince Harry, was hammered by critics and largely ignored by viewers," the story reports. "'Riot,' an odd mash-up of improv comedy and obstacle course, didn’t make an impression."

The Tuesday night shows will be replaced starting next week with repeats of the comedies "Family Guy," "Brooklyn Nine-Nine," "New Girl" and "The Mindy Project."

"The remaining episodes of 'Harry' will be available on Fox.com and On Demand, while Fox says [it is] looking for other places to burn off the remaining epiosdes on its schedule," the report notes.