diff --git a/docs/SchemaRelationnel.odg b/docs/SchemaRelationnel.odg
index 08fc5a5..65d0777 100644
Binary files a/docs/SchemaRelationnel.odg and b/docs/SchemaRelationnel.odg differ
diff --git a/stages/admin.py b/stages/admin.py
index d6533f8..bda0f3d 100644
--- a/stages/admin.py
+++ b/stages/admin.py
@@ -12,11 +12,14 @@ class StudentAdmin(admin.ModelAdmin):
 
 
 class CorpContactAdmin(admin.ModelAdmin):
-    list_display = ('__unicode__', 'corporation')
-    fields = ('corporation', ('last_name', 'first_name'), ('tel', 'email'))
+    list_display = ('__unicode__', 'corporation', 'role')
+    fields = ('corporation', ('title', 'last_name', 'first_name'),
+              'role', ('tel', 'email'))
 
-class ContactInline(admin.TabularInline):
+class ContactInline(admin.StackedInline):
     model = CorpContact
+    fields = (('title', 'last_name', 'first_name'),
+              ('role', 'tel', 'email'))
     extra = 1
 
 class CorporationAdmin(admin.ModelAdmin):
diff --git a/stages/fixtures/test_fixture.json b/stages/fixtures/test_fixture.json
index f481ded..4750377 100644
--- a/stages/fixtures/test_fixture.json
+++ b/stages/fixtures/test_fixture.json
@@ -101,8 +101,10 @@
     "model": "stages.corpcontact", 
     "fields": {
       "corporation": 1, 
+      "title": "Monsieur",
       "first_name": "Jean", 
       "last_name": "Horner", 
+      "role": "Responsable formation",
       "tel": "", 
       "email": ""
     }
diff --git a/stages/models.py b/stages/models.py
index cde563f..6101aa6 100644
--- a/stages/models.py
+++ b/stages/models.py
@@ -54,7 +54,7 @@ class Referent(models.Model):
 
 class Corporation(models.Model):
     name = models.CharField(max_length=100, verbose_name='Nom')
-    street = models.CharField(max_length=100, verbose_name='Rue')
+    street = models.CharField(max_length=100, blank=True, verbose_name='Rue')
     pcode = models.CharField(max_length=4, verbose_name='Code postal')
     city = models.CharField(max_length=40, verbose_name='Localité')
     tel = models.CharField(max_length=20, blank=True, verbose_name='Téléphone')
@@ -69,8 +69,10 @@ class Corporation(models.Model):
 
 class CorpContact(models.Model):
     corporation = models.ForeignKey(Corporation, verbose_name='Institution')
-    first_name = models.CharField(max_length=40, verbose_name='Prénom')
+    title = models.CharField(max_length=40, blank=True, verbose_name='Civilité')
+    first_name = models.CharField(max_length=40, blank=True, verbose_name='Prénom')
     last_name = models.CharField(max_length=40, verbose_name='Nom')
+    role = models.CharField(max_length=40, verbose_name='Fonction')
     tel = models.CharField(max_length=20, blank=True, verbose_name='Téléphone')
     email = models.CharField(max_length=40, blank=True, verbose_name='Courriel')
 
@@ -134,7 +136,7 @@ class Training(models.Model):
     """ Stages """
     student = models.ForeignKey(Student, verbose_name='Étudiant')
     availability = models.OneToOneField(Availability, verbose_name='Disponibilité')
-    referent = models.ForeignKey(Referent, verbose_name='Référent')
+    referent = models.ForeignKey(Referent, null=True, blank=True, verbose_name='Référent')
     comment = models.TextField(blank=True, verbose_name='Remarques')
 
     class Meta:
diff --git a/stages/views.py b/stages/views.py
index c18f9cd..e42c687 100644
--- a/stages/views.py
+++ b/stages/views.py
@@ -76,11 +76,13 @@ def period_availabilities(request, pk):
 def new_training(request):
     if request.method != 'POST':
         return HttpResponseNotAllowed()
+    ref_key = request.POST.get('referent')
     try:
+        ref = Referent.objects.get(pk=ref_key) if ref_key else None
         training = Training.objects.create(
             student=Student.objects.get(pk=request.POST.get('student')),
             availability=Availability.objects.get(pk=request.POST.get('avail')),
-            referent=Referent.objects.get(pk=request.POST.get('referent')),
+            referent=ref,
         )
     except Exception as exc:
         return HttpResponse(str(exc))
diff --git a/templates/attribution.html b/templates/attribution.html
index 92ae812..ebf673e 100644
--- a/templates/attribution.html
+++ b/templates/attribution.html
@@ -23,6 +23,8 @@
   input#valid_training { display: none; }
 
   div#trainings { clear: both; padding-top: 1em; }
+
+  .missing { font-style: italic; color: red; }
 </style>
 {% endblock %}
 
diff --git a/templates/trainings_list.html b/templates/trainings_list.html
index 6ef8486..b123511 100644
--- a/templates/trainings_list.html
+++ b/templates/trainings_list.html
@@ -1,3 +1,5 @@
 {% for obj in trainings %}
-<li>{{ obj.student }} - {{ obj.availability.corporation }} - {{ obj.availability.domain }}</li>
+<li>{{ obj.student }} - {{ obj.availability.corporation }} - {{ obj.availability.domain }}
+    {% if obj.referent %} (réf: {{ obj.referent }}){% else %}- <span class="missing">Pas de référent</span>{% endif %}
+</li>
 {% endfor %}