diff --git a/la_chariotte/order/templates/order/grouped_order_sheet.html b/la_chariotte/order/templates/order/grouped_order_sheet.html
index 117d2f6..86641f2 100644
--- a/la_chariotte/order/templates/order/grouped_order_sheet.html
+++ b/la_chariotte/order/templates/order/grouped_order_sheet.html
@@ -95,7 +95,9 @@
 					</td>
           {% for ordered_item in ordered_items %}
           <td>
+            {% if ordered_item > 0 %}
             {{ ordered_item }}
+            {% endif %}
           </td>
           {% endfor %}
           <td>
diff --git a/la_chariotte/order/tests/test_views.py b/la_chariotte/order/tests/test_views.py
index 0854560..cdbfa69 100644
--- a/la_chariotte/order/tests/test_views.py
+++ b/la_chariotte/order/tests/test_views.py
@@ -27,15 +27,30 @@ def order_items_in_grouped_order(grouped_order):
     """Creates 2 OrderedItems and orders in the given grouped order. Returns the order"""
     item_1 = grouped_order.item_set.create(name="test item", price="2")
     item_2 = grouped_order.item_set.create(name="test item 2", price="9")
-    author = models.OrderAuthor.objects.create(
+    author_1 = models.OrderAuthor.objects.create(
         first_name="bob", last_name="lescargot", phone="000", email="bob@escargot.fr"
     )
-    order = grouped_order.order_set.create(author=author)
+    author_2 = models.OrderAuthor.objects.create(
+        first_name="bob", last_name="alescargot", phone="000", email="bob2@escargot.fr"
+    )
+    author_3 = models.OrderAuthor.objects.create(
+        first_name="bobby",
+        last_name="alescargot",
+        phone="000",
+        email="bob3@escargot.fr",
+    )
+    order = grouped_order.order_set.create(author=author_1)
+    order_2 = grouped_order.order_set.create(author=author_2)
+    order_3 = grouped_order.order_set.create(author=author_3)
     models.OrderedItem.objects.create(order=order, item=item_1, nb=3)
     models.OrderedItem.objects.create(order=order, item=item_2, nb=2)
+    models.OrderedItem.objects.create(order=order_2, item=item_1, nb=1)
+    models.OrderedItem.objects.create(order=order_3, item=item_2, nb=1)
     item_1.compute_ordered_nb()
     item_2.compute_ordered_nb()
     order.compute_order_price()
+    order_2.compute_order_price()
+    order_3.compute_order_price()
     grouped_order.compute_total_price()
     grouped_order.save()
     return order
@@ -1217,8 +1232,8 @@ class TestGroupedOrderDeleteView:
         order = order_items_in_grouped_order(grouped_order)
 
         assert models.Item.objects.count() == 2
-        assert models.OrderedItem.objects.count() == 2
-        assert models.OrderAuthor.objects.count() == 1
+        assert models.OrderedItem.objects.count() == 4
+        assert models.OrderAuthor.objects.count() == 3
 
         # get the delete view
         delete_view_url = reverse(
@@ -1302,9 +1317,9 @@ class TestGroupedOrderDuplicateView:
         assert models.GroupedOrder.objects.count() == 1
         order = order_items_in_grouped_order(grouped_order)
         assert models.Item.objects.count() == 2
-        assert models.OrderedItem.objects.count() == 2
-        assert models.OrderAuthor.objects.count() == 1
-        assert grouped_order.item_set.first().ordered_nb == 3
+        assert models.OrderedItem.objects.count() == 4
+        assert models.OrderAuthor.objects.count() == 3
+        assert grouped_order.item_set.first().ordered_nb == 4
 
         # duplicate
         duplicate_view_url = reverse(
@@ -1330,7 +1345,7 @@ class TestGroupedOrderDuplicateView:
         )
 
         # The initial grouped order did not change
-        assert grouped_order.item_set.first().ordered_nb == 3
+        assert grouped_order.item_set.first().ordered_nb == 4
 
     def test_duplicate_grouped_order__not_orga(self, client_log, other_user):
         """A user that is not orga gets the duplicate view. They get a 403 error."""
@@ -1508,7 +1523,15 @@ class TestGroupedOrderSheetView:
         assert response.context["grouped_order"] == grouped_order
         assert response.context["items"].count() == 2
         assert response.context["orders_dict"][order] == [3, 2]
-        assert response.context["grouped_order"].total_price == 24
+        assert response.context["grouped_order"].total_price == 35
+
+        # test if the orders are sorted by last names
+        orders = list(response.context["orders_dict"].keys())
+        assert orders[0].author.last_name == "alescargot"
+        assert orders[0].author.first_name == "bob"
+        assert orders[1].author.last_name == "alescargot"
+        assert orders[1].author.first_name == "bobby"
+        assert orders[2].author.last_name == "lescargot"
 
 
 class TestExportGroupedOrderEmailAddressesToCSVView:
diff --git a/la_chariotte/order/views/grouped_order.py b/la_chariotte/order/views/grouped_order.py
index adee9fe..3568843 100644
--- a/la_chariotte/order/views/grouped_order.py
+++ b/la_chariotte/order/views/grouped_order.py
@@ -240,7 +240,9 @@ class GroupedOrderSheetView(UserPassesTestMixin, generic.DetailView):
 
         # Get content of orders as a dict {order : [ordered_nb for item 1, ordered_nb for item 2, ...]}
         orders_dict = {}
-        for order in grouped_order.order_set.all():
+        for order in grouped_order.order_set.all().order_by(
+            "author__last_name", "author__first_name"
+        ):
             ordered_values = []  # ordered_values list as value of the dict
             for item in items:  # items that has actually been ordered
                 # find the ordered nb of this item in this order