Red Bull have confirmed that they have made changes to their car as a result of discussions with governing body the FIA.
Rivals had alerted the FIA to a device in the Red Bull cockpit that they believed could be used to adjust the height of the front of the car's floor.
The concern of rival teams was that this could be used to make changes to the car's set-up between qualifying and races, when they are not allowed.
A Red Bull spokesperson told BBC Sport: "Yes, [the device] exists, although it is inaccessible once the car is fully assembled and ready to run.
"In the numerous correspondence we have with the FIA, this part came up and we have agreed a plan going forward."