The present invention relates to a method for setting a control device or a closed-loop control device (1500) of a blood treatment apparatus (1000), for executing a method which encompasses the following steps: a) providing, determining or reading out a correction factor (fkorr); b) correcting the flow value (QB, Qdia, QUF) and/or the treatment target (dtarg) respectively entered by the user by or about the correction factor (fkorr). Furthermore, the present invention relates to a blood treatment apparatus (1000), a digital storage medium, a computer program product and a computer program.本發明係關於一種用於設定一血液治療設備(1000)之一控制裝置或一閉環控制裝置(1500)的方法,該控制裝置或該閉環控制裝置係用於執行一包括以下步驟之方法:a)提供、判定或讀出一校正因數(fkorr);b)藉由該校正因數(fkorr)或大約以該校正因數(fkorr)校正由使用者分別鍵入之流量值(QB、Qdia、QUF)及/或治療目標(dtarg)。此外,本發明係關於一種血液治療設備(1000)、一種數位儲存媒體、一種電腦程式產品以及一種電腦程式。