diff --git a/addons/pos_restaurant/static/src/js/splitbill.js b/addons/pos_restaurant/static/src/js/splitbill.js
index 81591ccc589..ee55402c835 100644
--- a/addons/pos_restaurant/static/src/js/splitbill.js
+++ b/addons/pos_restaurant/static/src/js/splitbill.js
@@ -45,7 +45,7 @@ function openerp_restaurant_splitbill(instance, module){
                 }
             }else{
                 if( split.quantity < line.get_quantity()){
-                    split.quantity += line.get_unit().rounding;
+                    split.quantity += line.get_unit().is_unit ? 1 : line.get_unit().rounding;
                     if(split.quantity > line.get_quantity()){
                         split.quantity = line.get_quantity();
                     }