Method for operating a thick-matter pump, - wherein the thick-matter pump has: - a thick-matter delivery system, wherein the thick-matter delivery system is designed for delivering thick matter with a variably settable delivery volumetric flow rate, and - a hydraulic drive system, wherein, for driving the thick-matter delivery system, the hydraulic drive system has: - a hydraulic circuit having a hydraulic fluid, - a variably operable first drive pump, and - a variably operable second drive pump, - wherein the first drive pump is designed for variable operation with at least one variably settable first pump parameter and the second drive pump is designed for variable operation, independent of the first pump parameter, with at least one variably settable second pump parameter for generating a variably settable overall drive volumetric flow rate of the hydraulic fluid in the hydraulic circuit, - wherein the method comprises the steps of: determining an overall-drive-volumetric-flow-rate target value for the overall drive volumetric flow rate, - determining a first parameter target value (P5S) for the first pump parameter and a second parameter target value (P7S) for the second pump parameter in a manner dependent on the determined overall-drive-volumetric-flow-rate target value, wherein the first parameter target value (P5S) and the second parameter target value (P7S) differ from one another if the determined overall-drive-volumetric-flow-rate target value is in at least one overall-drive-volumetric-flow-rate-target-value range (QASB1, QASB2, QASB3, QASB1') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2`, QASB3') of possible overall-drive-volumetric-flow-rate target values, and - delivering the thick matter with the delivery volumetric flow rate with a delivery-volumetric-flow-rate target value by means of generating the overall drive volumetric flow rate with the determined overall-drive-volumetric-flow-rate target value by means of setting the first pump parameter to the determined first parameter target value (P5S) and the second pump parameter to the determined second parameter target value (P7S). - wherein the thick-matter pump has: - a thick-matter delivery system, wherein the thick-matter delivery system is designed for delivering thick matter with a variably settable delivery volumetric flow rate, and - a hydraulic drive system, wherein, for driving the thick-matter delivery system, the hydraulic drive system has: - a hydraulic circuit having a hydraulic fluid, - a variably operable first drive pump, and - a variably operable second drive pump, - wherein the first drive pump is designed for variable operation with at least one variably settable first pump parameter and the second drive pump is designed for variable operation, independent of the first pump parameter, with at least one variably settable second pump parameter for generating a variably settable overall drive volumetric flow rate of the hydraulic fluid in the hydraulic circuit, - a variably operable first drive pump, and - a variably operable second drive pump, - wherein the first drive pump is designed for variable operation with at least one variably settable first pump parameter and the second drive pump is designed for variable operation, independent of the first pump parameter, with at least one variably settable second pump parameter for generating a variably settable overall drive volumetric flow rate of the hydraulic fluid in the hydraulic circuit, - wherein the method comprises the steps of: determining an overall-drive-volumetric-flow-rate target value for the overall drive volumetric flow rate, - determining a first parameter target value (P5S) for the first pump parameter and a second parameter target value (P7S) for the second pump parameter in a manner dependent on the determined overall-drive-volumetric-flow-rate target value, wherein the first parameter target value (P5S) and the second parameter target value (P7S) differ from one another if the determined overall-drive-volumetric-flow-rate target value is in at least one overall-drive-volumetric-flow-rate-target-value range (QASB1, QASB2, QASB3, QASB1') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2`, QASB3') of possible overall-drive-volumetric-flow-rate target values, and - delivering the thick matter with the delivery volumetric flow rate with a delivery-volumetric-flow-rate target value by means of generating the overall drive volumetric flow rate with the determined overall-drive-volumetric-flow-rate target value by means of setting the first pump parameter to the determined first parameter target value (P5S) and the second pump parameter to the determined second parameter target value (P7S).