diff --git a/ApplicationCode/ProjectDataModel/StimPlanModel/RimStimPlanModelWellLogCalculator.cpp b/ApplicationCode/ProjectDataModel/StimPlanModel/RimStimPlanModelWellLogCalculator.cpp
index 201595e6e7..8bc7af3494 100644
--- a/ApplicationCode/ProjectDataModel/StimPlanModel/RimStimPlanModelWellLogCalculator.cpp
+++ b/ApplicationCode/ProjectDataModel/StimPlanModel/RimStimPlanModelWellLogCalculator.cpp
@@ -427,17 +427,19 @@ void RimStimPlanModelWellLogCalculator::scaleByNetToGross( const RimStimPlanMode
         return;
     }
 
-    double cutoff = 1.0;
-    if ( stimPlanModel->stimPlanModelTemplate() && stimPlanModel->stimPlanModelTemplate()->nonNetLayers() &&
-         stimPlanModel->stimPlanModelTemplate()->nonNetLayers()->isChecked() )
+    double netToGrossCutoff = 1.0;
+    bool   useNetToGross    = false;
+
+    if ( stimPlanModel->stimPlanModelTemplate() && stimPlanModel->stimPlanModelTemplate()->nonNetLayers() )
     {
-        cutoff = stimPlanModel->stimPlanModelTemplate()->nonNetLayers()->cutOff();
+        netToGrossCutoff = stimPlanModel->stimPlanModelTemplate()->nonNetLayers()->cutOff();
+        useNetToGross    = !netToGross.empty() && stimPlanModel->stimPlanModelTemplate()->nonNetLayers()->isChecked();
     }
 
     for ( size_t i = 0; i < values.size(); i++ )
     {
         double ntg = netToGross[i];
-        if ( ntg <= cutoff )
+        if ( useNetToGross && ntg <= netToGrossCutoff )
         {
             values[i] = ntg * values[i];
         }