diff --git a/preferences/templates/preferences/aff_radiuskey.html b/preferences/templates/preferences/aff_radiuskey.html
index 6aca740d..9d9980fa 100644
--- a/preferences/templates/preferences/aff_radiuskey.html
+++ b/preferences/templates/preferences/aff_radiuskey.html
@@ -28,6 +28,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
                 <th>Clef</th>
 		<th>Commentaire</th>
                 <th>Clef par default des switchs</th>
+		<th>Clef utilisée par les switchs</th>
 		<th></th>
                 <th></th>
             </tr>
@@ -37,10 +38,16 @@ with this program; if not, write to the Free Software Foundation, Inc.,
             <td>{{ radiuskey.radius_key }}</td>
             <td>{{ radiuskey.comment }}</td>
             <td>{{ radiuskey.default_switch }}</td>
+	    <td>{{ radiuskey.switch_set.all|join:", " }}</td>
             <td class="text-right">
             {% can_edit radiuskey %}
             {% include 'buttons/edit.html' with href='preferences:edit-radiuskey' id=radiuskey.id %}
             {% acl_end %}
+	    {% can_delete radiuskey %}
+            <a class="btn btn-danger btn-sm" role="button" title="Supprimer" href="{% url 'preferences:del-radiuskey' radiuskey.pk %}">
+		   <i class="fa fa-trash"></i>
+            </a>
+            {% acl_end %}
             {% include 'buttons/history.html' with href='preferences:history' name='radiuskey' id=radiuskey.id %}
             </td>
         </tr>
diff --git a/preferences/templates/preferences/aff_switchmanagementcred.html b/preferences/templates/preferences/aff_switchmanagementcred.html
index 2f03edf8..d69a287a 100644
--- a/preferences/templates/preferences/aff_switchmanagementcred.html
+++ b/preferences/templates/preferences/aff_switchmanagementcred.html
@@ -27,6 +27,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
             <tr>
                 <th>Identifiant</th>
                 <th>Creds par default des switchs</th>
+		<th>Utilisé pour les switchs</th>
 		<th></th>
                 <th></th>
             </tr>
@@ -35,10 +36,16 @@ with this program; if not, write to the Free Software Foundation, Inc.,
         <tr>
             <td>{{ switchmanagementcred.management_id }}</td>
             <td>{{ switchmanagementcred.default_switch }}</td>
+	    <td>{{ switchmanagementcred.switch_set.all|join:", " }}</td>
             <td class="text-right">
             {% can_edit switchmanagementcred %}
             {% include 'buttons/edit.html' with href='preferences:edit-switchmanagementcred' id=switchmanagementcred.id %}
             {% acl_end %}
+	    {% can_delete switchmanagementcred %}
+            <a class="btn btn-danger btn-sm" role="button" title="Supprimer" href="{% url 'preferences:del-switchmanagementcred' switchmanagementcred.pk %}">
+         	   <i class="fa fa-trash"></i>
+            </a>
+            {% acl_end %}
             {% include 'buttons/history.html' with href='preferences:history' name='switchmanagementcred' id=switchmanagementcred.id %}
             </td>
         </tr>
diff --git a/preferences/templates/preferences/delete.html b/preferences/templates/preferences/delete.html
new file mode 100644
index 00000000..ce277647
--- /dev/null
+++ b/preferences/templates/preferences/delete.html
@@ -0,0 +1,40 @@
+{% extends "topologie/sidebar.html" %}
+{% comment %}
+Re2o est un logiciel d'administration développé initiallement au rezometz. Il
+se veut agnostique au réseau considéré, de manière à être installable en
+quelques clics.
+
+Copyright © 2017  Gabriel Détraz
+Copyright © 2017  Goulven Kermarec
+Copyright © 2017  Augustin Lemesle
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+{% endcomment %}
+
+{% load bootstrap3 %}
+
+{% block title %}Création et modification de machines{% endblock %}
+
+{% block content %}
+
+<form class="form" method="post">
+    {% csrf_token %}
+    <h4>Attention, voulez-vous vraiment supprimer cet objet {{ objet_name }} ( {{ objet }} ) ?</h4>
+    {% bootstrap_button "Confirmer" button_type="submit" icon="trash" %}
+</form>
+  <br />
+  <br />
+  <br />
+{% endblock %}
diff --git a/preferences/urls.py b/preferences/urls.py
index 87e2f0ae..89d0254c 100644
--- a/preferences/urls.py
+++ b/preferences/urls.py
@@ -93,13 +93,13 @@ urlpatterns = [
         views.edit_radiuskey,
         name='edit-radiuskey'
         ),
-    url(r'^del_radiuskey/$', views.del_radiuskey, name='del-radiuskey'),
+    url(r'^del_radiuskey/(?P<radiuskeyid>[0-9]+)$', views.del_radiuskey, name='del-radiuskey'),
     url(r'^add_switchmanagementcred/$', views.add_switchmanagementcred, name='add-switchmanagementcred'),
     url(
         r'^edit_switchmanagementcred/(?P<switchmanagementcredid>[0-9]+)$',
         views.edit_switchmanagementcred,
         name='edit-switchmanagementcred'
         ),
-    url(r'^del_switchmanagementcred/$', views.del_switchmanagementcred, name='del-switchmanagementcred'),
+    url(r'^del_switchmanagementcred/(?P<switchmanagementcredid>[0-9]+)$', views.del_switchmanagementcred, name='del-switchmanagementcred'),
     url(r'^$', views.display_options, name='display-options'),
 ]
diff --git a/preferences/views.py b/preferences/views.py
index 726e430e..181434ea 100644
--- a/preferences/views.py
+++ b/preferences/views.py
@@ -261,8 +261,12 @@ def edit_radiuskey(request, radiuskey_instance, **_kwargs):
 def del_radiuskey(request, radiuskey_instance, **_kwargs):
     """Destruction d'un radiuskey"""
     if request.method == "POST":
-        radiuskey_instance.delete()
-        messages.success(request, "La radiuskey a été détruite")
+        try:
+            radiuskey_instance.delete()
+            messages.success(request, "La radiuskey a été détruite")
+        except ProtectedError:
+            messages.error(request, "Erreur la\
+                clef ne peut être supprimé, elle est affectée à des switchs")
         return redirect(reverse('preferences:display-options'))
     return form(
         {'objet': radiuskey_instance, 'objet_name': 'radiuskey'},
@@ -306,8 +310,12 @@ def edit_switchmanagementcred(request, switchmanagementcred_instance, **_kwargs)
 def del_switchmanagementcred(request, switchmanagementcred_instance, **_kwargs):
     """Destruction d'un switchmanagementcred"""
     if request.method == "POST":
-        switchmanagementcred_instance.delete()
-        messages.success(request, "Ce switchmanagementcred a été détruit")
+        try:
+            switchmanagementcred_instance.delete()
+            messages.success(request, "Ces creds ont été détruits")
+        except ProtectedError:
+            messages.error(request, "Erreur ces\
+                creds ne peuvent être supprimés, ils sont affectés à des switchs")
         return redirect(reverse('preferences:display-options'))
     return form(
         {'objet': switchmanagementcred_instance, 'objet_name': 'switchmanagementcred'},