diff --git a/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.cpp b/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.cpp
index c9b9ac3c22..6d3f60aef0 100644
--- a/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.cpp
+++ b/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.cpp
@@ -115,6 +115,9 @@ void RigEclipseNativeVisibleCellsStatCalc::mobileVolumeWeightedMean( size_t time
 
     m_caseData->ensureKnownResultLoaded( mobPorvAddress );
 
+    if ( !m_caseData->hasResultEntry( m_resultAddress ) ) return;
+    if ( m_caseData->timeStepCount( m_resultAddress ) == 0 ) return;
+
     const std::vector<double>& weights = m_caseData->cellScalarResults( mobPorvAddress, 0 );
     const std::vector<double>& values  = m_caseData->cellScalarResults( m_resultAddress, timeStepIndex );
 
diff --git a/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.h b/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.h
index 4288421890..641e89b977 100644
--- a/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.h
+++ b/ApplicationLibCode/ReservoirDataModel/RigEclipseNativeVisibleCellsStatCalc.h
@@ -52,6 +52,9 @@ private:
     template <typename StatisticsAccumulator>
     void traverseCells( StatisticsAccumulator& accumulator, size_t timeStepIndex )
     {
+        if ( !m_caseData->hasResultEntry( m_resultAddress ) ) return;
+        if ( m_caseData->timeStepCount( m_resultAddress ) == 0 ) return;
+
         size_t clampedTimeStepIndex       = std::min( timeStepIndex, m_caseData->timeStepCount( m_resultAddress ) - 1 );
         const std::vector<double>& values = m_caseData->cellScalarResults( m_resultAddress, clampedTimeStepIndex );