Systems and methods are disclosed herein for determining the validity of idle mode measurements. In some embodiments, a method performed by a wireless device for determining a validity of one or more idle mode measurements performed for a cellular communications network comprises receiving, from a network node, an idle mode measurement configuration comprising a measurement duration time value and a validity time value for idle mode measurements. The method further comprises, while in a dormant state, performing one or more idle mode measurements according to the idle mode measurement configuration. The method further comprises determining that one or more idle mode measurement reports are invalid based on the validity time value and deleting the one or more idle mode measurement reports after determining that the one or more idle mode measurement reports are invalid based on the validity time value.