Government data showed Monday, real GDP, adjusted for inflation, rose 0.45% from the previous quarter, slightly lower than the initial 0.51% reading.
Investment fell 0.7%, compared with an earlier estimate of a 0.3% increase.
Public investment was revised upward to a 1.5% rise from 1.4%.
Private consumption grew 0.35%, up from the preliminary 0.27%.
Housing investment was revised to a 0.9% increase from 0.5%.
The country’s exports rose 1.8% (up from 1.7%), while imports grew 0.4% (down from 0.5%).
Nominal GDP expanded at 2.5%, revised down from 3.4%.
Earlier it was reported, Japanese automakers’ global sales fell 1.3% in April.