diff --git a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/server/logic/ExperimentFeatureVectorSummaryLoader.java b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/server/logic/ExperimentFeatureVectorSummaryLoader.java
index 34568e6be5c1fffa67eb6cd62d2b74c5d913b9fc..78c1f7472c92293528269b2bf9dec190ea239724 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/server/logic/ExperimentFeatureVectorSummaryLoader.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/server/logic/ExperimentFeatureVectorSummaryLoader.java
@@ -42,7 +42,6 @@ import ch.systemsx.cisd.openbis.generic.shared.basic.dto.ListOrSearchSampleCrite
 import ch.systemsx.cisd.openbis.generic.shared.basic.dto.Material;
 import ch.systemsx.cisd.openbis.generic.shared.basic.dto.Sample;
 import ch.systemsx.cisd.openbis.generic.shared.dto.Session;
-import ch.systemsx.cisd.openbis.generic.shared.util.StopWatchLogger;
 import ch.systemsx.cisd.openbis.plugin.screening.server.IScreeningBusinessObjectFactory;
 import ch.systemsx.cisd.openbis.plugin.screening.server.logic.dto.IWellData;
 import ch.systemsx.cisd.openbis.plugin.screening.server.logic.dto.WellData;
@@ -107,11 +106,9 @@ public class ExperimentFeatureVectorSummaryLoader extends AbstractContentLoader
     protected final List<MaterialFeatureVectorSummary> calculateReplicasFeatureVectorSummaries(
             WellDataCollection wellDataCollection)
     {
-        StopWatchLogger watch = StopWatchLogger.createAndStart();
         List<MaterialFeatureVectorSummary> summaries =
                 WellReplicaSummaryCalculator.calculateReplicasFeatureVectorSummaries(
                         wellDataCollection.getWellDataList(), settings.getAggregationType());
-        watch.logAndReset("calculateReplicasFeatureVectorSummaries");
         return summaries;
     }