diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/data/DataSetUploadForm.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/data/DataSetUploadForm.java
index 72bac5702c2b54d6dffca70fbb515dd651cbc3b2..bb21f19859aef53336890af66e80e20b27cde8e8 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/data/DataSetUploadForm.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/data/DataSetUploadForm.java
@@ -66,7 +66,7 @@ public class DataSetUploadForm extends AbstractRegistrationForm
         saveButton.setText(viewContext.getMessage(Dict.BUTTON_UPLOAD_DATA_VIA_CIFEX));
         sampleChooser =
                 SampleChooserField.create(viewContext.getMessage(Dict.SAMPLE), true, null, false,
-                        true, viewContext);
+                        false, viewContext);
         formPanel.add(sampleChooser.getField());
         formPanel.add(dataSetTypeSelectionWidget =
                 new DataSetTypeSelectionWidget(viewContext, ID_SUFFIX));