A method of controlling a printer 1 that cuts recording paper according to a paper cut command after printing print data received from a host computer 80 on the recording paper 10. If the paper cut command is received while performing an automatic clogged nozzle detection process on the inkjet head 17 after printing ends (S1: Yes), the automatic clogged nozzle detection process is interrupted (S2), and the cutting process is performed (S3).