diff --git a/mission/controller/acs/AttitudeEstimation.cpp b/mission/controller/acs/AttitudeEstimation.cpp
index 5e07642f..cf55a31e 100644
--- a/mission/controller/acs/AttitudeEstimation.cpp
+++ b/mission/controller/acs/AttitudeEstimation.cpp
@@ -10,7 +10,7 @@ void AttitudeEstimation::quest(acsctrl::SusDataProcessed *susData,
                                acsctrl::MgmDataProcessed *mgmData,
                                acsctrl::AttitudeEstimationData *attitudeEstimation) {
   if (not(susData->susVecTot.isValid() and susData->sunIjkModel.isValid() and
-          mgmData->mgmVecTot.value and mgmData->magIgrfModel.isValid())) {
+          mgmData->mgmVecTot.isValid() and mgmData->magIgrfModel.isValid())) {
     {
       PoolReadGuard pg{attitudeEstimation};
       if (pg.getReadResult() == returnvalue::OK) {