diff --git a/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.cpp b/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.cpp
index 83645e046a..fd0caf9cec 100644
--- a/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.cpp
+++ b/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.cpp
@@ -230,6 +230,14 @@ RifReaderInterface* RimReservoirCellResultsStorage::readerInterface()
 }
 
 
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+const RifReaderInterface* RimReservoirCellResultsStorage::readerInterface() const
+{
+    return m_readerInterface.p();
+}
+
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.h b/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.h
index bc668a54dc..6a5d42dad9 100644
--- a/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.h
+++ b/ApplicationCode/ProjectDataModel/RimReservoirCellResultsStorage.h
@@ -55,6 +55,7 @@ public:
 
     void                            setReaderInterface(RifReaderInterface* readerInterface);
     RifReaderInterface*             readerInterface();
+    const RifReaderInterface*       readerInterface() const;
 
     void                            computeDepthRelatedResults();
     bool                            isDataPresent(size_t scalarResultIndex) const;