diff --git a/addons/stock/static/src/js/widgets.js b/addons/stock/static/src/js/widgets.js
index 624e0a82adf..c450a100458 100644
--- a/addons/stock/static/src/js/widgets.js
+++ b/addons/stock/static/src/js/widgets.js
@@ -272,10 +272,9 @@ function openerp_picking_widgets(instance){
         },
         check_content_screen: function(){
             //get all visible element and if none has positive qty, disable put in pack and process button
-
-            //TODO process should be clickable if we have a container visible at screen and not processed
             var self = this;
             var qties = this.$('.js_pack_op_line:not(.processed):not(.hidden) .js_qty').map(function(){return $(this).attr('placeholder')});
+            var container = this.$('.js_pack_op_line.container_head:not(.processed):not(.hidden)')
             var disabled = true;
             $.each(qties,function(index, value){
                 if (parseInt(value)>0){
@@ -283,7 +282,12 @@ function openerp_picking_widgets(instance){
                 }
             });
             if (disabled){
-                self.$('.js_drop_down').addClass('disabled');
+                if (container.length===0){
+                    self.$('.js_drop_down').addClass('disabled');
+                }
+                else {
+                    self.$('.js_drop_down').removeClass('disabled');
+                }
                 self.$('.js_pick_pack').addClass('disabled');
             }
             else{