diff --git a/addons/web_graph/static/src/js/graph_widget.js b/addons/web_graph/static/src/js/graph_widget.js
index ae9be9e0844..bbf27daffb0 100644
--- a/addons/web_graph/static/src/js/graph_widget.js
+++ b/addons/web_graph/static/src/js/graph_widget.js
@@ -320,8 +320,8 @@ openerp.web_graph.Graph = openerp.web.Widget.extend({
         this.dropdown = $(QWeb.render('field_selection', {fields:fields, header_id:id}));
         $(event.target).after(this.dropdown);
         this.dropdown.css({position:'absolute',
-                           left:event.pageX,
-                           top:event.pageY});
+                           left:event.originalEvent.layerX,
+                           top:event.originalEvent.layerY});
         this.$('.field-selection').next('.dropdown-menu').toggle();