diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index ad5dd21d0d8..e36b46ed51a 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -1617,8 +1617,8 @@ class Binary(openerpweb.Controller):
                 'filename': ufile.filename,
                 'id':  attachment_id
             }
-        except Exception, e:
-            args = { 'error': e.message }
+        except Exception,e:
+            args = {'erorr':e.faultCode.split('--')[1],'title':e.faultCode.split('--')[0]}
         return out % (simplejson.dumps(callback), simplejson.dumps(args))
 
 class Action(openerpweb.Controller):
diff --git a/addons/web/static/src/js/views.js b/addons/web/static/src/js/views.js
index 81662ac6487..ddedcdd2ff6 100644
--- a/addons/web/static/src/js/views.js
+++ b/addons/web/static/src/js/views.js
@@ -978,11 +978,7 @@ instance.web.Sidebar = instance.web.Widget.extend({
         this.fileupload_id = _.uniqueId('oe_fileupload');
         $(window).on(this.fileupload_id, function() {
             var args = [].slice.call(arguments).slice(1);
-            if (args[0] && args[0].error) {
-                alert(args[0].error);
-            } else {
-                self.do_attachement_update(self.dataset, self.model_id);
-            }
+            self.do_attachement_update(self.dataset, self.model_id,args);
             instance.web.unblockUI();
         });
     },
@@ -1092,9 +1088,21 @@ instance.web.Sidebar = instance.web.Widget.extend({
             });
         });
     },
-    do_attachement_update: function(dataset, model_id) {
+    do_attachement_update: function(dataset, model_id,args) {
+        var self = this;
         this.dataset = dataset;
         this.model_id = model_id;
+        if (args && args[0]["erorr"]) {
+             instance.web.dialog($('<div>'),{
+                    modal: true,
+                    title: "OpenERP " + _.str.capitalize(args[0]["title"]),
+                    buttons: [{
+                        text: _t("Ok"),
+                        click: function(){
+                            $(this).dialog("close");
+                    }}]
+              }).html(args[0]["erorr"]);
+        }
         if (!model_id) {
             this.on_attachments_loaded([]);
         } else {