diff --git a/apps/tbde/models.py b/apps/tbde/models.py
index 82d8d63..1fdbc64 100644
--- a/apps/tbde/models.py
+++ b/apps/tbde/models.py
@@ -15,6 +15,9 @@ class Ticket(models.Model):
         verbose_name=_("note")
     )
 
+    def __str__(self):
+        return "n°" + str(self.number) + " : " + str(self.note)
+
 
 class Reward(models.Model):
     order = models.PositiveIntegerField(
@@ -33,5 +36,10 @@ class Reward(models.Model):
     rewarded_by = models.ForeignKey(
         Ticket,
         on_delete=models.PROTECT,
-        verbose_name=_("rewarded by")
+        null=True,
+        blank=True,
+        verbose_name=_("rewarded by"),
     )
+
+    def __str__(self):
+        return str(self.order) + " - " + str(self.name)