diff --git a/gmap.views.inc b/gmap.views.inc
index ee23b9f..f41a92a 100644
--- a/gmap.views.inc
+++ b/gmap.views.inc
@@ -65,6 +65,9 @@ function template_preprocess_gmap_views_view_gmapextended(&$vars) {
   */
 
   foreach ($markers as $offset => $marker) {
+    // Set up 'opts' array to make tooltips work
+    $markers[$offset]['opts'] = array('title' => isset($marker['title']) ? $marker['title'] : NULL); 
+    
     switch ($options['clickmode']) {
       case 'render':
         $markers[$offset]['text'] = $vars['result'][$offset];