A method can include initiating, by a wireless device, a small data transmission (SDT) procedure. The method can also include transmitting a radio resource control (RRC) message indicating non-SDT data arriving during the SDT procedure. The method can further include starting, by the wireless device, a timer based on the RRC message or the non-SDT data arrival. The method can additionally include receiving a response to the RRC message while an RRC timer is running. The method can also include stopping the timer based on receiving the response.