Chinese regulators announced Friday they received a notification from Tesla (NASDAQ:TSLA) that the electric automaker will deploy software updates to more than 1 million vehicles to allow changes to braking methods and more warnings about the use of accelerator pedals.

According to Chinese regulations, the event is classified as a “product recall,” as stated by the regulator. However, it remains unclear at the moment whether drivers will be required or eligible to return their vehicles to Tesla for refunds.

From May 29, the U.S. automaker will issue over-the-air software updates to 1.1M units of its Model S, Model X, Model 3, and Model Y cars, both imported and China-made, the State Administration for Market Regulation said in a statement.

According to the recall report, the concerned vehicles may not allow drivers to turn off regenerative braking or provide enough warnings when drivers stepped on the accelerator pedal hard, which, combined, could increase the risk of collision.

The update will restore the option of switching off regenerative braking and warn drivers when they step hard on the accelerator pedal, it added.

Shares of TSLA are up 2.14% in pre-market trading on Friday.