Japan briefly activated its missile alert warning system for the Okinawa region on Wednesday morning after South Korea's military said North Korea had launched what it called a "space launch vehicle".
The launch initially prompted the activation of a missile warning system for the southern region.
But around 30 minutes later, the government tweeted that the alert was being cancelled.
"It is expected that the missile reported earlier will not come to Japan. The call for evacuation is lifted," it said.
Japan has activated its missile early warning alarms on several previous occasions in response to launches by Pyongyang, although the alerts are usually lifted quickly.