diff --git a/bda/admin.py b/bda/admin.py
index 476f7d89..0e257593 100644
--- a/bda/admin.py
+++ b/bda/admin.py
@@ -5,6 +5,7 @@ from django.core.mail import send_mail
 from django.contrib import admin
 from django.db.models import Sum, Count
 from bda.models import Spectacle, Salle, Participant, ChoixSpectacle, Attribution, Tirage
+from django import forms
 
 from datetime import timedelta
 
@@ -107,6 +108,15 @@ Le Bureau des Arts
         self.message_user(request, u"%s été informé%s avec succès." % (message_bit, plural))
     send_attribs.short_description = u"Envoyer les résultats par mail"
 
+class AttributionAdminForm(forms.ModelForm):
+    def clean(self):
+        cleaned_data=super(AttributionAdminForm, self).clean()
+        participant = cleaned_data.get("participant")
+        spectacle = cleaned_data.get("spectacle")
+        if participant and spectacle:
+            if participant.tirage != spectacle.tirage:
+                raise forms.ValidationError(u"Erreur : le participant et le spectacle n'appartiennent pas au même tirage")
+
 class AttributionAdmin(admin.ModelAdmin):
     def paid(self, obj):
         return obj.participant.paid
@@ -114,6 +124,7 @@ class AttributionAdmin(admin.ModelAdmin):
     paid.boolean = True
     list_display = ("id", "spectacle", "participant", "given", "paid")
     search_fields = ('spectacle__title', 'participant__user__username', 'participant__user__first_name', 'participant__user__last_name')
+    form = AttributionAdminForm
 
 import autocomplete_light
 class ChoixSpectacleAdmin(admin.ModelAdmin):
diff --git a/bda/models.py b/bda/models.py
index 16ea4818..294870c6 100644
--- a/bda/models.py
+++ b/bda/models.py
@@ -75,7 +75,7 @@ class Participant(models.Model):
     tirage = models.ForeignKey(Tirage)
     
     def __unicode__ (self):
-        return u"%s" % (self.user)
+        return u"%s, %s" % (self.user, self.tirage.title)
 
 DOUBLE_CHOICES = (
     ("1", "1 place"),