An example implementation may involve a control device receiving, from a first playback device of a media playback system, a calibration state variable indicating that the first playback device is uncalibrated. The control device may cause a graphical interface to display an indication that the first playback device is uncalibrated. The control device may also cause the graphical interface to display a selectable control that, when selected, initiates calibration of the first playback device. Based on detecting selection of the selectable control, the control device may initiate calibration of the first playback device.