diff --git a/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/AbstractImageStorageProcessor.java b/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/AbstractImageStorageProcessor.java
index 843528a8ee46a617140faa1f3e00c3e2628e279b..c2a1e36ab48cf129aab133e11e0c5741bd067663 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/AbstractImageStorageProcessor.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/AbstractImageStorageProcessor.java
@@ -285,10 +285,7 @@ abstract class AbstractImageStorageProcessor extends AbstractStorageProcessor im
                     extractionResultWithConfig.getExtractionResult()
                             .getDatasetRelativeImagesFolderPath();
 
-            ImageDataSetInformation imageDataSetInformation =
-                    (ImageDataSetInformation) dataSetInformation;
-
-            if (false == imageDataSetInformation.getRegisterAsOverviewImageDataSet())
+            if (false == getRegisterAsOverviewImageDataSet(dataSetInformation))
             {
                 processImages(plateImages, datasetRelativeImagesFolderPath,
                         imageStorageConfiguraton);
@@ -296,15 +293,24 @@ abstract class AbstractImageStorageProcessor extends AbstractStorageProcessor im
 
             shouldDeleteOriginalDataOnCommit =
                     imageStorageConfiguraton.getOriginalDataStorageFormat().isHdf5()
-                            && false == imageDataSetInformation.getRegisterAsOverviewImageDataSet();
+                            && false == getRegisterAsOverviewImageDataSet(dataSetInformation);
 
             dbTransaction = processor.createQuery();
             processor.storeInDatabase(dbTransaction,
                     extractionResultWithConfig.getImageDatasetOwner(), extractionResult,
-                    imageDataSetInformation.getRegisterAsOverviewImageDataSet());
+                    getRegisterAsOverviewImageDataSet(dataSetInformation));
 
             return rootDirectory;
         }
+        
+        private boolean getRegisterAsOverviewImageDataSet(DataSetInformation dataSetInfo)
+        {
+            if (dataSetInfo instanceof ImageDataSetInformation == false)
+            {
+                return false;
+            }
+            return ((ImageDataSetInformation) dataSetInfo).getRegisterAsOverviewImageDataSet();
+        }
 
         private void processImages(List<AcquiredSingleImage> images,
                 File datasetRelativeImagesFolderPath,