diff --git a/addons/pad/static/src/js/pad.js b/addons/pad/static/src/js/pad.js
index e04184bc8f7..d44ca07417a 100644
--- a/addons/pad/static/src/js/pad.js
+++ b/addons/pad/static/src/js/pad.js
@@ -25,7 +25,7 @@ openerp.pad = function(instance) {
                 self.$(".oe_unconfigured").toggle(!configured);
                 self.$(".oe_configured").toggle(configured);
             });
-            this.render_value();
+            this.on("change:effective_readonly", this, this.render_value);
         },
         render_value: function() {
             var self = this;
@@ -36,9 +36,12 @@ openerp.pad = function(instance) {
                 var value = self.get('value');
                 if (self.get('effective_readonly')) {
                     if (_.str.startsWith(value, 'http')) {
+                        self.$('.oe_pad_content').addClass('oe_pad_loading')
                         this.pad_loading_request = self.view.dataset.call('pad_get_content', {url: value}).done(function(data) {
-                            self.$('.oe_pad_content').removeClass('oe_pad_loading').html('<div class="oe_pad_readonly"><div>');
-                            self.$('.oe_pad_readonly').html(data);
+                            if (self.$('.oe_pad_loading').length) {
+                                self.$('.oe_pad_content').removeClass('oe_pad_loading').html('<div class="oe_pad_readonly"><div>');
+                                self.$('.oe_pad_readonly').html(data);
+                            }
                         }).fail(function() {
                             self.$('.oe_pad_content').text(_t('Unable to load pad'));
                         });