diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/SearchController.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/SearchController.java
index 62b41cf..a00fcdc 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/SearchController.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/SearchController.java
@@ -101,6 +101,7 @@ import org.gcube.portlets.widgets.wsexplorer.client.save.WorkspaceExplorerSaveDi
 import org.gcube.portlets.widgets.wsexplorer.shared.Item;
 
 import com.allen_sauer.gwt.log.client.Log;
+import com.extjs.gxt.ui.client.core.XDOM;
 import com.extjs.gxt.ui.client.data.BaseModelData;
 import com.extjs.gxt.ui.client.event.Listener;
 import com.extjs.gxt.ui.client.event.MessageBoxEvent;
@@ -1260,6 +1261,7 @@ public class SearchController {
 		};
 
 		navigator.addWorkspaceExplorerSaveNotificationListener(listener);
+		navigator.setZIndex(XDOM.getTopZIndex()+1000);
 		navigator.show();
 
 	}