diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 9abf8fdfbf9..55653151fad 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -1577,7 +1577,11 @@ openerp.web.form.FieldUrl = openerp.web.form.FieldChar.extend({
         if (!this.value) {
             this.do_warn("Resource error", "This resource is empty");
         } else {
-            window.open(this.value);
+            var url = $.trim(this.value);
+            if(url.toLowerCase().search("http://") != -1)
+                window.open(url);
+            else
+                window.open('http://'+url);
         }
     }
 });