A method and system for allowing unsafe action signals in a dispensing system of a vehicle. A discharging signalling system of at least one dispenser of a vehicle includes an activation circuit arranged to discharge the dispenser. An indicator is arranged to indicate that dispensing is allowed. The activation circuit includes a first safety arrangement arranged to be activated when an indication from the indicator indicates that dispensing is allowed. The activation circuit also includes a second safety arrangement arranged to be activated when a discharge of the dispenser is indicated.