diff --git a/la_chariotte/order/templates/order/grouped_order_detail.html b/la_chariotte/order/templates/order/grouped_order_detail.html
index cee5cd3..b3f3c50 100644
--- a/la_chariotte/order/templates/order/grouped_order_detail.html
+++ b/la_chariotte/order/templates/order/grouped_order_detail.html
@@ -53,7 +53,7 @@
             {% csrf_token %}
           <td>{{ item.name }}</td>
           <td>{{ item.price }} €</td>
-          <td><input name="quantity_{{ item.id }}" size="2" value="0"></input></td>
+          <td><input name="quantity_{{ item.id }}" size="2" type="number" value="0" min="0"></input></td>
           <td>Total pour ce produit</td>
         </tr>
         {% endfor %}
diff --git a/la_chariotte/order/views.py b/la_chariotte/order/views.py
index a79f8be..9ab3602 100644
--- a/la_chariotte/order/views.py
+++ b/la_chariotte/order/views.py
@@ -137,9 +137,12 @@ def order(request, grouped_order_id):
     author = OrderAuthor.objects.create(first_name=first_name, last_name=last_name)
     order = Order.objects.create(author=author, grouped_order=grouped_order)
     for k, v in orders_dict.items():
-        item = grouped_order.item_set.get(pk=k.split("_")[1])
-        OrderedItem.objects.create(nb=v, order=order, item=item)
-        compute_ordered_nb(item)
+        if v == "":
+            v = 0
+        if int(v) > 0:
+            item = grouped_order.item_set.get(pk=k.split("_")[1])
+            OrderedItem.objects.create(nb=v, order=order, item=item)
+            compute_ordered_nb(item)
     compute_order_articles_nb(order)
     compute_order_price(order)
     if order.articles_nb == 0: