diff --git a/gestioncof/admin.py b/gestioncof/admin.py
index 659d5018..0a2b190e 100644
--- a/gestioncof/admin.py
+++ b/gestioncof/admin.py
@@ -132,7 +132,6 @@ def ProfileInfo(field, short_description, boolean=False):
 
 User.profile_login_clipper = FkeyLookup("profile__login_clipper",
                                         "Login clipper")
-User.profile_num = FkeyLookup("profile__num", "Numéro")
 User.profile_phone = ProfileInfo("phone", "Téléphone")
 User.profile_occupation = ProfileInfo("occupation", "Occupation")
 User.profile_departement = ProfileInfo("departement", "Departement")
@@ -159,10 +158,12 @@ class UserProfileAdmin(UserAdmin):
     is_cof.short_description = 'Membre du COF'
     is_cof.boolean = True
 
-    list_display = ('profile_num',) + UserAdmin.list_display \
+    list_display = (
+        UserAdmin.list_display
         + ('profile_login_clipper', 'profile_phone', 'profile_occupation',
            'profile_mailing_cof', 'profile_mailing_bda',
            'profile_mailing_bda_revente', 'is_cof', 'is_buro', )
+    )
     list_display_links = ('username', 'email', 'first_name', 'last_name')
     list_filter = UserAdmin.list_filter \
         + ('profile__is_cof', 'profile__is_buro', 'profile__mailing_cof',
diff --git a/gestioncof/forms.py b/gestioncof/forms.py
index 5ee4acf6..b52f5417 100644
--- a/gestioncof/forms.py
+++ b/gestioncof/forms.py
@@ -3,13 +3,11 @@ from django.utils.translation import ugettext_lazy as _
 from django.contrib.auth.models import User
 from django.forms.widgets import RadioSelect, CheckboxSelectMultiple
 from django.forms.formsets import BaseFormSet, formset_factory
-from django.db.models import Max
 from django.core.validators import MinLengthValidator
 
 from gestioncof.models import CofProfile, EventCommentValue, \
     CalendarSubscription, Club
 from gestioncof.widgets import TriStateCheckbox
-from gestioncof.shared import lock_table, unlock_table
 
 from bda.models import Spectacle
 
@@ -237,7 +235,6 @@ class RegistrationProfileForm(forms.ModelForm):
         self.fields['mailing_cof'].initial = True
         self.fields['mailing_bda'].initial = True
         self.fields['mailing_bda_revente'].initial = True
-        self.fields['num'].widget.attrs['readonly'] = True
 
         self.fields.keyOrder = [
             'login_clipper',
@@ -245,7 +242,6 @@ class RegistrationProfileForm(forms.ModelForm):
             'occupation',
             'departement',
             'is_cof',
-            'num',
             'type_cotiz',
             'mailing_cof',
             'mailing_bda',
@@ -253,24 +249,9 @@ class RegistrationProfileForm(forms.ModelForm):
             'comments'
             ]
 
-    def save(self, *args, **kw):
-        instance = super(RegistrationProfileForm, self).save(*args, **kw)
-        if instance.is_cof and not instance.num:
-            # Generate new number
-            try:
-                lock_table(CofProfile)
-                aggregate = CofProfile.objects.aggregate(Max('num'))
-                instance.num = aggregate['num__max'] + 1
-                instance.save()
-                self.cleaned_data['num'] = instance.num
-                self.data['num'] = instance.num
-            finally:
-                unlock_table(CofProfile)
-        return instance
-
     class Meta:
         model = CofProfile
-        fields = ("login_clipper", "num", "phone", "occupation",
+        fields = ("login_clipper", "phone", "occupation",
                   "departement", "is_cof", "type_cotiz", "mailing_cof",
                   "mailing_bda", "mailing_bda_revente", "comments")
 
diff --git a/gestioncof/migrations/0011_remove_cofprofile_num.py b/gestioncof/migrations/0011_remove_cofprofile_num.py
new file mode 100644
index 00000000..f39ce367
--- /dev/null
+++ b/gestioncof/migrations/0011_remove_cofprofile_num.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('gestioncof', '0010_delete_custommail'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='cofprofile',
+            name='num',
+        ),
+    ]
diff --git a/gestioncof/models.py b/gestioncof/models.py
index b1bf443f..f1ad35e1 100644
--- a/gestioncof/models.py
+++ b/gestioncof/models.py
@@ -35,7 +35,6 @@ class CofProfile(models.Model):
     user = models.OneToOneField(User, related_name="profile")
     login_clipper = models.CharField("Login clipper", max_length=8, blank=True)
     is_cof = models.BooleanField("Membre du COF", default=False)
-    num = models.IntegerField("Numéro d'adhérent", blank=True, default=0)
     phone = models.CharField("Téléphone", max_length=20, blank=True)
     occupation = models.CharField(_("Occupation"),
                                   default="1A",
diff --git a/gestioncof/views.py b/gestioncof/views.py
index 68cce3a2..227a3e0a 100644
--- a/gestioncof/views.py
+++ b/gestioncof/views.py
@@ -400,9 +400,6 @@ def registration_form2(request, login_clipper=None, username=None,
 def registration(request):
     if request.POST:
         request_dict = request.POST.copy()
-        # num ne peut pas être défini manuellement
-        if "num" in request_dict:
-            del request_dict["num"]
         member = None
         login_clipper = None
         success = False
@@ -442,7 +439,6 @@ def registration(request):
             member = user_form.save()
             profile, _ = CofProfile.objects.get_or_create(user=member)
             was_cof = profile.is_cof
-            request_dict["num"] = profile.num
             # Maintenant on remplit le formulaire de profil
             profile_form = RegistrationProfileForm(request_dict,
                                                    instance=profile)
@@ -500,11 +496,11 @@ def registration(request):
         # Messages
         if success:
             msg = ("L'inscription de {:s} (<tt>{:s}</tt>) a été "
-                   "enregistrée avec succès"
+                   "enregistrée avec succès."
                    .format(member.get_full_name(), member.email))
             if member.profile.is_cof:
-                msg += "Il est désormais membre du COF n°{:d} !".format(
-                    member.profile.num)
+                msg += "\nIl est désormais membre du COF n°{:d} !".format(
+                    member.profile.id)
             messages.success(request, msg, extra_tags='safe')
         return render(request, "gestioncof/registration_post.html",
                       {"user_form": user_form,
@@ -569,7 +565,7 @@ def export_members(request):
     writer = unicodecsv.writer(response)
     for profile in CofProfile.objects.filter(is_cof=True).all():
         user = profile.user
-        bits = [profile.num, user.username, user.first_name, user.last_name,
+        bits = [profile.id, user.username, user.first_name, user.last_name,
                 user.email, profile.phone, profile.occupation,
                 profile.departement, profile.type_cotiz]
         writer.writerow([str(bit) for bit in bits])
@@ -588,7 +584,7 @@ def csv_export_mega(filename, qs):
         comments = "---".join(
             [comment.content for comment in reg.comments.all()])
         bits = [user.username, user.first_name, user.last_name, user.email,
-                profile.phone, profile.num,
+                profile.phone, profile.id,
                 profile.comments if profile.comments else "", comments]
 
         writer.writerow([str(bit) for bit in bits])
@@ -610,7 +606,7 @@ def export_mega_remarksonly(request):
         user = reg.user
         profile = user.profile
         bits = [user.username, user.first_name, user.last_name, user.email,
-                profile.phone, profile.num, profile.comments, val.content]
+                profile.phone, profile.id, profile.comments, val.content]
         writer.writerow([str(bit) for bit in bits])
 
     return response