The leu opened at 4.307/4.310 to the euro, compared to 4.304/4.306 at closing the day before.
Within the first hour the leu did not show any significant oscillation.
The central bank set Thursday the reference rate at 4.298 units, 0.25% weaker on the day.
On the money market, overnight rates stayed at 3.9%-4.4% a year.