The invention discloses a control capsule 1 for a regulating device of an exhaust-gas turbocharger; - having a housing 2 in which there are formed a first air chamber 5 and a second air chamber 6 which are separated from one another in gas-tight fashion by a spring-loaded diaphragm 7; - having a regulating rod 8 which is connected in force-transmitting fashion to the diaphragm 7, characterized by - a hole 12 which connects the second air chamber 6 in gas-conducting fashion to the surroundings U of the housing 1, wherein the hole 12 has a hole area A of greater than 20 mm².