A drive-in tool for driving fastening means into a workpiece wherein the tool comprises: - an actuator unit , by means of which the fastening means are drivable into the workpiece in drive-in cycles, - a trip arrangement , by means of which the drive-in cycles of the actuator unit are trippable, wherein the trip arrangement comprises a trigger element which is manually operable and comprises an idle state and a pressed state , wherein the trip arrangement also comprises a workpiece contact element which is actuatable by placing the drive-in tool onto the workpiece , - a gas pressure source connection to which a gas pressure source is connectable, - a safety device which is coupled with the trigger element and is set up to bring about a transfer of the drive-in tool from a trip-ready state into a secured state after expiry of a delay time which proceeds from an activation of the safety device , - wherein the safety device comprises a control volume , - wherein the safety device comprises an activation element which is changeable between a first and a second position by means of the trigger element , - wherein in the first position of the activation element a pneumatic connection is defined between the control volume and the gas pressure source connection , which is hereafter referred to as charging connection (27.1), and - wherein in the second position of the activation element a pneumatic connection is defined between the control volume and a pressure sink , which is hereafter referred to as discharging connection (33.1), - wherein one connection from the charging connection (27.1) and the discharging connection (33.1) comprises a smallest cross-sectional flow area (33.8) which, together with a gas pressure of the gas pressure source, determines the delay time of the safety device characterised in that the safety device is set up to transfer the tool into the secured state if a pressure threshold in the control volume is fallen below. - an actuator unit , by means of which the fastening means are drivable into the workpiece in drive-in cycles, - a trip arrangement , by means of which the drive-in cycles of the actuator unit are trippable, wherein the trip arrangement comprises a trigger element which is manually operable and comprises an idle state and a pressed state , wherein the trip arrangement also comprises a workpiece contact element which is actuatable by placing the drive-in tool onto the workpiece , - a gas pressure source connection to which a gas pressure source is connectable, - a safety device which is coupled with the trigger element and is set up to bring about a transfer of the drive-in tool from a trip-ready state into a secured state after expiry of a delay time which proceeds from an activation of the safety device , - wherein the safety device comprises a control volume , - wherein the safety device comprises an activation element which is changeable between a first and a second position by means of the trigger element , - wherein in the first position of the activation element a pneumatic connection is defined between the control volume and the gas pressure source connection , which is hereafter referred to as charging connection (27.1), and - wherein in the second position of the activation element a pneumatic connection is defined between the control volume and a pressure sink , which is hereafter referred to as discharging connection (33.1), - wherein one connection from the charging connection (27.1) and the discharging connection (33.1) comprises a smallest cross-sectional flow area (33.8) which, together with a gas pressure of the gas pressure source, determines the delay time of the safety device <EOS>