--- a/browser/components/places/content/places.js
+++ b/browser/components/places/content/places.js
@@ -301,17 +301,17 @@ var PlacesOrganizer = {
     var selectedNode = currentView.selectedNode;
     if (selectedNode && aEvent.button == 1) {
       if (PlacesUtils.nodeIsURI(selectedNode))
         PlacesUIUtils.openNodeWithEvent(selectedNode, aEvent);
       else if (PlacesUtils.nodeIsContainer(selectedNode)) {
         // The command execution function will take care of seeing the
         // selection is a folder/container and loading its contents in
         // tabs for us.
-        PlacesUIUtils.openContainerNodeInTabs(selectedNode);
+        PlacesUIUtils.openContainerNodeInTabs(selectedNode, aEvent);
       }
     }
   },
 
   /**
    * Handle focus changes on the trees.
    * When moving focus between panes we should update the details pane contents.
    * @param   aEvent