diff --git a/api/serializers.py b/api/serializers.py
index 1a1f970e..9f4b89ed 100644
--- a/api/serializers.py
+++ b/api/serializers.py
@@ -239,66 +239,64 @@ class OuverturePortSerializer(NamespacedHMSerializer):
 # PREFERENCES APP
 
 
-# class OptionalUserSerializer(NamespacedHMSerializer):
-#     tel_mandatory = serializers.BooleanField(source='is_tel_mandatory')
-# 
-#     class Meta:
-#         model = preferences.OptionalUser
-#         fields = ('tel_mandatory', 'user_solde', 'solde_negatif', 'max_solde',
-#                   'min_online_payement', 'gpg_fingerprint',
-#                   'all_can_create_club', 'self_adhesion', 'shell_default',
-#                   'api_url')
-# 
-# 
-# class OptionalMachineSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.OptionalMachine
-#         fields = ('password_machine', 'max_lambdauser_interfaces',
-#                   'max_lambdauser_aliases', 'ipv6_mode', 'create_machine',
-#                   'ipv6', 'api_url')
-# 
-# 
-# class OptionalTopologieSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.OptionalTopologie
-#         fields = ('radius_general_policy', 'vlan_decision_ok',
-#                   'vlan_decision_no', 'api_url')
-# 
-# 
-# class GeneralOptionSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.GeneralOption
-#         fields = ('general_message', 'search_display_page',
-#                   'pagination_number', 'pagination_large_number',
-#                   'req_expire_hrs', 'site_name', 'email_from', 'GTU_sum_up',
-#                   'GTU', 'api_url')
-# 
-# 
-# class ServiceOptionSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.ServiceOption
-#         fields = ('name', 'url', 'description', 'image', 'api_url')
-# 
-# 
-# class AssoOptionSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.AssoOption
-#         fields = ('name', 'siret', 'adresse1', 'adresse2', 'contact',
-#                   'telephone', 'pseudo', 'utilisateur_asso', 'payement',
-#                   'payement_id', 'payement_pass', 'description', 'api_url')
-# 
-# 
-# class HomeOptionSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.HomeOption
-#         fields = ('facebook_url', 'twitter_url', 'twitter_account_name',
-#                   'api_url')
-# 
-# 
-# class MailMessageOptionSerializer(NamespacedHMSerializer):
-#     class Meta:
-#         model = preferences.MailMessageOption
-#         fields = ('welcome_mail_fr', 'welcome_mail_en', 'api_url')
+class OptionalUserSerializer(NamespacedHMSerializer):
+    tel_mandatory = serializers.BooleanField(source='is_tel_mandatory')
+
+    class Meta:
+        model = preferences.OptionalUser
+        fields = ('tel_mandatory', 'user_solde', 'solde_negatif', 'max_solde',
+                  'min_online_payment', 'gpg_fingerprint',
+                  'all_can_create_club', 'self_adhesion', 'shell_default')
+
+
+class OptionalMachineSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.OptionalMachine
+        fields = ('password_machine', 'max_lambdauser_interfaces',
+                  'max_lambdauser_aliases', 'ipv6_mode', 'create_machine',
+                  'ipv6')
+
+
+class OptionalTopologieSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.OptionalTopologie
+        fields = ('radius_general_policy', 'vlan_decision_ok',
+                  'vlan_decision_nok')
+
+
+class GeneralOptionSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.GeneralOption
+        fields = ('general_message', 'search_display_page',
+                  'pagination_number', 'pagination_large_number',
+                  'req_expire_hrs', 'site_name', 'email_from', 'GTU_sum_up',
+                  'GTU')
+
+
+class ServiceSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.Service
+        fields = ('name', 'url', 'description', 'image', 'api_url')
+
+
+class AssoOptionSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.AssoOption
+        fields = ('name', 'siret', 'adresse1', 'adresse2', 'contact',
+                  'telephone', 'pseudo', 'utilisateur_asso', 'payment',
+                  'payment_id', 'payment_pass', 'description')
+
+
+class HomeOptionSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.HomeOption
+        fields = ('facebook_url', 'twitter_url', 'twitter_account_name')
+
+
+class MailMessageOptionSerializer(NamespacedHMSerializer):
+    class Meta:
+        model = preferences.MailMessageOption
+        fields = ('welcome_mail_fr', 'welcome_mail_en')
 
 
 
diff --git a/api/urls.py b/api/urls.py
index 1d244de8..dd3783dc 100644
--- a/api/urls.py
+++ b/api/urls.py
@@ -58,14 +58,7 @@ router.register(r'machines/servicelinks', views.ServiceLinkViewSet, base_name='s
 router.register(r'machines/ouvertureportlists', views.OuverturePortListViewSet)
 router.register(r'machines/ouvertureports', views.OuverturePortViewSet)
 # PREFERENCES APP
-#router.register(r'preferences/optionaluser', views.OptionalUserSerializer)
-#router.register(r'preferences/optionalmachine', views.OptionalMachineSerializer)
-#router.register(r'preferences/optionaltopologie', views.OptionalTopologieSerializer)
-#router.register(r'preferences/generaloption', views.GeneralOptionSerializer)
-#router.register(r'preferences/serviceoption', views.ServiceOptionSerializer)
-#router.register(r'preferences/assooption', views.AssoOptionSerializer)
-#router.register(r'preferences/homeoption', views.HomeOptionSerializer)
-#router.register(r'preferences/mailmessageoption', views.MailMessageOptionSerializer)
+router.register(r'preferences/service', views.ServiceViewSet),
 # TOPOLOGIE APP
 router.register(r'topologie/stack', views.StackViewSet)
 router.register(r'topologie/acesspoint', views.AccessPointViewSet)
@@ -91,10 +84,23 @@ router.register(r'services/regen', views.ServiceRegenViewSet, base_name='service
 
 
 urlpatterns = [
+    # VIEWSETS
     url(r'^', include(router.urls)),
+    # PREFERENCES APP
+    url(r'^preferences/optionaluser', views.OptionalUserView.as_view()),
+    url(r'^preferences/optionalmachine', views.OptionalMachineView.as_view()),
+    url(r'^preferences/optionaltopologie', views.OptionalTopologieView.as_view()),
+    url(r'^preferences/generaloption', views.GeneralOptionView.as_view()),
+    url(r'^preferences/assooption', views.AssoOptionView.as_view()),
+    url(r'^preferences/homeoption', views.HomeOptionView.as_view()),
+    url(r'^preferences/mailmessageoption', views.MailMessageOptionView.as_view()),
+    # DHCP
     url(r'^dhcp/hostmacip', views.HostMacIpView.as_view()),
+    # DNS
     url(r'^dns/zones', views.DNSZonesView.as_view()),
+    # MAILING
     url(r'^mailing/standard', views.StandardMailingView.as_view()),
     url(r'^mailing/club', views.ClubMailingView.as_view()),
+    # TOKEN-AUTH
     url(r'^token-auth', views.ObtainExpiringAuthToken.as_view())
 ]
diff --git a/api/views.py b/api/views.py
index 99ee3e44..7d4aaffc 100644
--- a/api/views.py
+++ b/api/views.py
@@ -178,45 +178,75 @@ class OuverturePortViewSet(viewsets.ReadOnlyModelViewSet):
 
 
 # PREFERENCES APP
+# Those views differ a bit because there is only one object
+# to display, so we don't bother with the listing part
 
-# class OptionalUserViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.OptionalUser.objects.all()
-#     serializer_class = serializers.OptionalUserSerializer
-# 
-# 
-# class OptionalMachineViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.OptionalMachine.objects.all()
-#     serializer_class = serializers.OptionalMachineSerializer
-# 
-# 
-# class OptionalTopologieViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.OptionalTopologie.objects.all()
-#     serializer_class = serializers.OptionalTopologieSerializer
-# 
-# 
-# class GeneralOptionViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.GeneralOption.objects.all()
-#     serializer_class = serializers.GeneralOptionSerializer
-# 
-# 
-# class ServiceOptionViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.ServiceOption.objects.all()
-#     serializer_class = serializers.ServiceOptionSerializer
-# 
-# 
-# class AssoOptionViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.AssoOption.objects.all()
-#     serializer_class = serializers.AssoOptionSerializer
-# 
-# 
-# class HomeOptionViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.HomeOption.objects.all()
-#     serializer_class = serializers.HomeOptionSerializer
-# 
-# 
-# class MailMessageOptionViewSet(viewsets.ReadOnlyModelViewSet):
-#     queryset = preferences.MailMessageOption.objects.all()
-#     serializer_class = serializers.MailMessageOptionSerializer
+class OptionalUserView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.OptionalUser.can_view_all]}
+    serializer_class = serializers.OptionalUserSerializer
+
+    def get_object(self):
+        return preferences.OptionalUser.objects.first()
+
+
+class OptionalMachineView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.OptionalMachine.can_view_all]}
+    serializer_class = serializers.OptionalMachineSerializer
+
+    def get_object(self):
+        return preferences.OptionalMachine.objects.first()
+
+
+class OptionalTopologieView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.OptionalTopologie.can_view_all]}
+    serializer_class = serializers.OptionalTopologieSerializer
+
+    def get_object(self):
+        return preferences.OptionalTopologie.objects.first()
+
+
+class GeneralOptionView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.GeneralOption.can_view_all]}
+    serializer_class = serializers.GeneralOptionSerializer
+
+    def get_object(self):
+        return preferences.GeneralOption.objects.first()
+
+
+class ServiceViewSet(viewsets.ReadOnlyModelViewSet):
+    queryset = preferences.Service.objects.all()
+    serializer_class = serializers.ServiceSerializer
+
+
+class AssoOptionView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.AssoOption.can_view_all]}
+    serializer_class = serializers.AssoOptionSerializer
+
+    def get_object(self):
+        return preferences.AssoOption.objects.first()
+
+
+class HomeOptionView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.HomeOption.can_view_all]}
+    serializer_class = serializers.HomeOptionSerializer
+
+    def get_object(self):
+        return preferences.HomeOption.objects.first()
+
+
+class MailMessageOptionView(generics.RetrieveAPIView):
+    permission_classes = (ACLPermission, )
+    perms_map = {'GET' : [preferences.MailMessageOption.can_view_all]}
+    serializer_class = serializers.MailMessageOptionSerializer
+
+    def get_object(self):
+        return preferences.MailMessageOption.objects.first()
 
 
 # TOPOLOGIE APP