It is presented a method for changing a semi-persistent scheduling, SPS, interval for a wireless device from an original SPS interval to a new SPS interval. The method is performed in a network node and comprises the steps of: determining that the SPS interval is to be changed; generating a message element comprising an indicator of the new SPS interval; and transmitting a signal comprising the message element to the wireless device over a user plane. A corresponding network node, computer program and computer program product are also presented.