diff --git a/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/HCSDatasetLoaderFactory.java b/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/HCSDatasetLoaderFactory.java
index a7568cbf59e6378bc8b92893777cb506a6f1838d..08d3ac72e2a8c3cb1d35c08234db98f5a9256095 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/HCSDatasetLoaderFactory.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/HCSDatasetLoaderFactory.java
@@ -55,6 +55,8 @@ public class HCSDatasetLoaderFactory
         return new HCSDatasetLoader(query, datasetCode, datasetRootDir);
     }
 
+    // remove when not needed
+    @SuppressWarnings("unused")
     private static IHCSDatasetLoader createBDSLoader(File datasetRootDir)
     {
         final ch.systemsx.cisd.bds.hcs.HCSDatasetLoader loader =