diff --git a/ApplicationCode/ProjectDataModel/RimCase.h b/ApplicationCode/ProjectDataModel/RimCase.h
index 675c5649ac..e7785b6dff 100644
--- a/ApplicationCode/ProjectDataModel/RimCase.h
+++ b/ApplicationCode/ProjectDataModel/RimCase.h
@@ -51,8 +51,8 @@ public:
 
     virtual void                                updateFilePathsFromProjectPath(const QString& projectPath, const QString& oldProjectPath) = 0;
 
-    virtual QStringList                         timeStepStrings() = 0;
-    virtual QString                             timeStepName(int frameIdx) = 0;
+    virtual QStringList                         timeStepStrings() const = 0;
+    virtual QString                             timeStepName(int frameIdx) const = 0;
 
     virtual cvf::BoundingBox                    activeCellsBoundingBox() const = 0;
     virtual cvf::BoundingBox                    allCellsBoundingBox() const = 0;
diff --git a/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp b/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp
index 673d7b6238..7f102c395d 100644
--- a/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp
+++ b/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp
@@ -525,7 +525,18 @@ RimReservoirCellResultsStorage* RimEclipseCase::results(RifReaderInterface::Poro
     return m_fractureModelResults();
 }
 
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+const RimReservoirCellResultsStorage* RimEclipseCase::results(RifReaderInterface::PorosityModelResultType porosityModel) const
+{
+    if (porosityModel == RifReaderInterface::MATRIX_RESULTS)
+    {
+        return m_matrixModelResults();
+    }
 
+    return m_fractureModelResults();
+}
 
 //--------------------------------------------------------------------------------------------------
 /// 
@@ -582,7 +593,7 @@ std::vector<RimView*> RimEclipseCase::views()
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-QStringList RimEclipseCase::timeStepStrings()
+QStringList RimEclipseCase::timeStepStrings() const
 {
     QStringList stringList;
 
@@ -598,7 +609,7 @@ QStringList RimEclipseCase::timeStepStrings()
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-QString RimEclipseCase::timeStepName(int frameIdx)
+QString RimEclipseCase::timeStepName(int frameIdx) const
 {
     std::vector<QDateTime> timeStepDates = this->timeStepDates();
     CVF_ASSERT(frameIdx < static_cast<int>(timeStepDates.size()));
@@ -671,7 +682,7 @@ void RimEclipseCase::reloadDataAndUpdate()
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-std::vector<QDateTime> RimEclipseCase::timeStepDates()
+std::vector<QDateTime> RimEclipseCase::timeStepDates() const
 {
     return results(RifReaderInterface::MATRIX_RESULTS)->cellResults()->timeStepDates();
 }
diff --git a/ApplicationCode/ProjectDataModel/RimEclipseCase.h b/ApplicationCode/ProjectDataModel/RimEclipseCase.h
index 5cce6417c0..b5ff497ad8 100644
--- a/ApplicationCode/ProjectDataModel/RimEclipseCase.h
+++ b/ApplicationCode/ProjectDataModel/RimEclipseCase.h
@@ -74,6 +74,7 @@ public:
     cvf::Color3f                                defaultWellColor(const QString& wellName);
 
     RimReservoirCellResultsStorage*             results(RifReaderInterface::PorosityModelResultType porosityModel);
+    const RimReservoirCellResultsStorage*       results(RifReaderInterface::PorosityModelResultType porosityModel) const;
                                                       
     RimEclipseView*                             createAndAddReservoirView();
     RimEclipseView*                             createCopyAndAddView(const RimEclipseView* sourceView);
@@ -87,9 +88,9 @@ public:
     RimCaseCollection*                          parentCaseCollection();
                                                      
     virtual std::vector<RimView*>               views();
-    virtual QStringList                         timeStepStrings();
-    virtual QString                             timeStepName(int frameIdx);
-    std::vector<QDateTime>                      timeStepDates();
+    virtual QStringList                         timeStepStrings() const override;
+    virtual QString                             timeStepName(int frameIdx) const override;
+    std::vector<QDateTime>                      timeStepDates() const;
 
 
     virtual cvf::BoundingBox                    activeCellsBoundingBox() const;
diff --git a/ApplicationCode/ProjectDataModel/RimGeoMechCase.cpp b/ApplicationCode/ProjectDataModel/RimGeoMechCase.cpp
index 47759350be..b3c6da50f7 100644
--- a/ApplicationCode/ProjectDataModel/RimGeoMechCase.cpp
+++ b/ApplicationCode/ProjectDataModel/RimGeoMechCase.cpp
@@ -191,11 +191,11 @@ void RimGeoMechCase::initAfterRead()
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-QStringList RimGeoMechCase::timeStepStrings()
+QStringList RimGeoMechCase::timeStepStrings() const
 {
     QStringList stringList;
 
-    RigGeoMechCaseData* rigCaseData = geoMechData();
+    const RigGeoMechCaseData* rigCaseData = geoMechData();
     if (rigCaseData && rigCaseData->femPartResults())
     {
         std::vector<std::string> stepNames = rigCaseData->femPartResults()->stepNames();
@@ -211,9 +211,9 @@ QStringList RimGeoMechCase::timeStepStrings()
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-QString RimGeoMechCase::timeStepName(int frameIdx)
+QString RimGeoMechCase::timeStepName(int frameIdx) const
 {
-    RigGeoMechCaseData* rigCaseData = geoMechData();
+    const RigGeoMechCaseData* rigCaseData = geoMechData();
     if (rigCaseData && rigCaseData->femPartResults())
     {
        std::vector<std::string> stepNames = rigCaseData->femPartResults()->stepNames();
diff --git a/ApplicationCode/ProjectDataModel/RimGeoMechCase.h b/ApplicationCode/ProjectDataModel/RimGeoMechCase.h
index 08926ce81a..7fede2fc23 100644
--- a/ApplicationCode/ProjectDataModel/RimGeoMechCase.h
+++ b/ApplicationCode/ProjectDataModel/RimGeoMechCase.h
@@ -58,8 +58,8 @@ public:
     virtual void                            updateFilePathsFromProjectPath(const QString& projectPath, const QString& oldProjectPath);
     virtual std::vector<RimView*>           views();
 
-    virtual QStringList                     timeStepStrings();
-    virtual QString                         timeStepName(int frameIdx);
+    virtual QStringList                     timeStepStrings() const override;
+    virtual QString                         timeStepName(int frameIdx) const override;
 
     virtual cvf::BoundingBox                activeCellsBoundingBox() const;
     virtual cvf::BoundingBox                allCellsBoundingBox() const;