diff --git a/src/main/java/org/gcube/portlets/widgets/ckandatapublisherwidget/client/ui/CreateDatasetForm.java b/src/main/java/org/gcube/portlets/widgets/ckandatapublisherwidget/client/ui/CreateDatasetForm.java
index 831fd6b..1a352af 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckandatapublisherwidget/client/ui/CreateDatasetForm.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckandatapublisherwidget/client/ui/CreateDatasetForm.java
@@ -1262,12 +1262,15 @@ public class CreateDatasetForm extends Composite{
 		maintainerEmailTextbox.setText("");
 		tagsPanel.removeTags();
 
+		// unselect all groups
+		for(int i = 0; i < groupsListbox.getItemCount(); i++)
+			groupsListbox.setItemSelected(i, false);
+
 		// delete custom fields
 		for (CustomFieldEntry customField : customFieldEntriesList) {
 			customField.removeFromParent();
 		}
 		customFieldEntriesList.clear();
-
 	}
 
 	/**