diff --git a/ApplicationLibCode/ProjectDataModel/RimReservoirGridEnsemble.cpp b/ApplicationLibCode/ProjectDataModel/RimReservoirGridEnsemble.cpp
index 9d9524f0e7..711f6d6413 100644
--- a/ApplicationLibCode/ProjectDataModel/RimReservoirGridEnsemble.cpp
+++ b/ApplicationLibCode/ProjectDataModel/RimReservoirGridEnsemble.cpp
@@ -32,6 +32,7 @@
 #include "ContourMap/RimStatisticsContourMap.h"
 #include "ContourMap/RimStatisticsContourMapView.h"
 #include "EnsembleFileSet/RimEnsembleFileSet.h"
+#include "EnsembleFileSet/RimEnsembleFileSetTools.h"
 #include "Formations/RimFormationNames.h"
 #include "Formations/RimFormationNamesCollection.h"
 #include "RimCaseCollection.h"
@@ -631,6 +632,11 @@ QList<caf::PdmOptionItemInfo> RimReservoirGridEnsemble::calculateValueOptions( c
 {
     QList<caf::PdmOptionItemInfo> options;
 
+    if ( fieldNeedingOptions == &m_ensembleFileSet )
+    {
+        return RimEnsembleFileSetTools::ensembleFileSetOptions();
+    }
+
     if ( fieldNeedingOptions == &m_activeFormationNames )
     {
         RimProject* proj = RimProject::current();