Drinks preparation machine for preparing a drink which can be operated in multiple operating modes (M1, M2, M3, M4) and comprises: a liquid container for a liquid, a drinks preparation device for preparing the drink using a liquid, at least one fluid line which is connected to the liquid container and the drinks preparation device in order to permit a supply of a liquid from the liquid container to the drinks preparation device through the at least one fluid line, a receiving device for receiving a liquid filter which is able to be placed in a predetermined filter position and removed again therefrom, a sensor for detecting a liquid filter and a control device for controlling a supply of a liquid from the liquid container into the at least one fluid line, wherein the receiving device is configured such that, independently of whether a liquid filter is placed in the predetermined filter position, a supply of a liquid from the liquid container to the drinks preparation device is possible through the at least one fluid line, and such that, if a liquid filter is placed in the predetermined filter position, with a supply of a liquid from the liquid container into the at least one fluid line, at least one portion of the liquid has to pass through the liquid filter, and wherein the sensor is configured to produce a signal which contains information about whether a liquid filter is placed in the predetermined filter position, characterized in that the control device is designed to prompt the supply of a liquid from the liquid container into the at least one fluid line as a function of the signal of the sensor, wherein the control device is further configured such that in at least one of the operating modes it prompts the supply of a liquid independently of whether a liquid filter is placed in the predetermined filter position, and in at least one other of the operating modes it then prompts the supply of a liquid exclusively when no liquid filter is placed in the predetermined filter position. a liquid container for a liquid, a drinks preparation device for preparing the drink using a liquid, at least one fluid line which is connected to the liquid container and the drinks preparation device in order to permit a supply of a liquid from the liquid container to the drinks preparation device through the at least one fluid line, a receiving device for receiving a liquid filter which is able to be placed in a predetermined filter position and removed again therefrom, a sensor for detecting a liquid filter and a control device for controlling a supply of a liquid from the liquid container into the at least one fluid line, wherein the receiving device is configured such that, independently of whether a liquid filter is placed in the predetermined filter position, a supply of a liquid from the liquid container to the drinks preparation device is possible through the at least one fluid line, and such that, if a liquid filter is placed in the predetermined filter position, with a supply of a liquid from the liquid container into the at least one fluid line, at least one portion of the liquid has to pass through the liquid filter, and wherein the sensor is configured to produce a signal which contains information about whether a liquid filter is placed in the predetermined filter position, characterized in that the control device is designed to prompt the supply of a liquid from the liquid container into the at least one fluid line as a function of the signal of the sensor, wherein the control device is further configured such that in at least one of the operating modes it prompts the supply of a liquid independently of whether a liquid filter is placed in the predetermined filter position, and in at least one other of the operating modes it then prompts the supply of a liquid exclusively when no liquid filter is placed in the predetermined filter position.