diff --git a/apps/note/models/notes.py b/apps/note/models/notes.py
index 4980fb729cd7275de125f74266e14a1dc6a2407c..b5c43e6a4a616377acac0183b271ff0fe9321fb9 100644
--- a/apps/note/models/notes.py
+++ b/apps/note/models/notes.py
@@ -173,6 +173,21 @@ class NoteClub(Note):
     def pretty(self):
         return _("Note of %(club)s club") % {'club': str(self.club)}
 
+    def save(self, *args, **kwargs):
+        if self.pk and self.balance < 0:
+            old_note = NoteClub.objects.get(pk=self.pk)
+            if old_note.balance >= 0:
+                # Passage en négatif
+                self.last_negative = timezone.now()
+                self.send_mail_negative_balance()
+        super().save(*args, **kwargs)
+
+    def send_mail_negative_balance(self):
+        plain_text = render_to_string("note/mails/negative_balance.txt", dict(note=self))
+        html = render_to_string("note/mails/negative_balance.html", dict(note=self))
+        self.user.email_user("[Note Kfet] Passage en négatif (club {})"
+                             .format(self.club.name), plain_text, html_message=html)
+
 
 class NoteSpecial(Note):
     """
diff --git a/apps/note/templates/note/mails/negative_balance.html b/apps/note/templates/note/mails/negative_balance.html
index 180c43857520f8865071d9070b3857190b7b9520..ef53299898e8658052fa23e3618b49a9e215170f 100644
--- a/apps/note/templates/note/mails/negative_balance.html
+++ b/apps/note/templates/note/mails/negative_balance.html
@@ -10,7 +10,7 @@
 </head>
 <body>
 <p>
-    Bonjour {{ note.user.first_name }} {{ note.user.last_name }},
+    Bonjour {{ note }},
 </p>
 
 <p>
diff --git a/apps/note/templates/note/mails/negative_balance.txt b/apps/note/templates/note/mails/negative_balance.txt
index f0ee4a2154baa372688ebcd94fac96d9e366356e..f257194d6f91cbd0bbe6b45abb50bfeee335ab98 100644
--- a/apps/note/templates/note/mails/negative_balance.txt
+++ b/apps/note/templates/note/mails/negative_balance.txt
@@ -2,7 +2,7 @@
 {% load getenv %}
 {% load i18n %}
 
-Bonjour {{ note.user.first_name }} {{ note.user.last_name }},
+Bonjour {{ note }},
 
 Ce mail t'a été envoyé parce que le solde de ta Note Kfet
 {{ note }} est négatif !
diff --git a/apps/note/templates/note/mails/negative_notes_report.html b/apps/note/templates/note/mails/negative_notes_report.html
index 434c2d4d593965aff59c858c766dea494c9ba0b0..49254f5d4ff63025da0349d296e5e570b7c4276b 100644
--- a/apps/note/templates/note/mails/negative_notes_report.html
+++ b/apps/note/templates/note/mails/negative_notes_report.html
@@ -22,10 +22,17 @@
 <tbody>
     {% for note in notes %}
         <tr>
-            <td>{{ note.user.last_name }}</td>
-            <td>{{ note.user.first_name }}</td>
-            <td>{{ note.user.username }}</td>
-            <td>{{ note.user.email }}</td>
+            {% if note.user %}
+                <td>{{ note.user.last_name }}</td>
+                <td>{{ note.user.first_name }}</td>
+                <td>{{ note.user.username }}</td>
+                <td>{{ note.user.email }}</td>
+            {% else %}
+                <td></td>
+                <td></td>
+                <td>{{ note.club.name }}</td>
+                <td>{{ note.club.email }}</td>
+            {% endif %}
             <td>{{ note.balance|pretty_money }}</td>
             <td>{{ note.last_negative_duration }}</td>
         </tr>
diff --git a/apps/note/templates/note/mails/negative_notes_report.txt b/apps/note/templates/note/mails/negative_notes_report.txt
index ead5b5fb6dd396bf17820242143c0561fa06fb86..3209fbb824a22237548d4b3192f10c4bd64b7b01 100644
--- a/apps/note/templates/note/mails/negative_notes_report.txt
+++ b/apps/note/templates/note/mails/negative_notes_report.txt
@@ -4,7 +4,7 @@
          Nom         |   Prénom   |     Pseudo      |               Email               |  Solde   |   Durée
 ---------------------+------------+-----------------+-----------------------------------+----------+-----------
 {% for note in notes %}
-{{ note.user.last_name }} | {{ note.user.first_name }} | {{ note.user.username }} | {{ note.user.email }} | {{ note.balance|pretty_money }} | {{ note.last_negative_duration }}
+{% if note.user %}{{ note.user.last_name }} | {{ note.user.first_name }} | {{ note.user.username }} | {{ note.user.email }} | {{ note.balance|pretty_money }} | {{ note.last_negative_duration }}{% else %}                     |            | {{ note.club.name }} | {{ note.club.email }} | {{ note.balance|pretty_money }} | {{ note.last_negative_duration }}{% endif %}
 {% endfor %}
 
 --
diff --git a/apps/scripts b/apps/scripts
index 4179cad611151d2b66da3fc87cebcb5317779cb2..2b1c05ff98327cfda8ea968376c3b47d6f2aeccb 160000
--- a/apps/scripts
+++ b/apps/scripts
@@ -1 +1 @@
-Subproject commit 4179cad611151d2b66da3fc87cebcb5317779cb2
+Subproject commit 2b1c05ff98327cfda8ea968376c3b47d6f2aeccb