diff --git a/oscarapi/fixtures/offer.xml b/oscarapi/fixtures/offer.xml
index c69eeed3..4c455240 100644
--- a/oscarapi/fixtures/offer.xml
+++ b/oscarapi/fixtures/offer.xml
@@ -27,6 +27,7 @@
         <field type="PositiveIntegerField" name="num_applications">0</field>
         <field type="PositiveIntegerField" name="num_orders">0</field>
         <field type="CharField" name="redirect_url"/>
+        <field type="BooleanField" name="exclusive">False</field>
         <field type="DateTimeField" name="date_created">2015-11-16T11:08:15.653721+00:00</field>
     </object>
     <object pk="1" model="offer.benefit">
diff --git a/oscarapi/fixtures/voucher.xml b/oscarapi/fixtures/voucher.xml
index 34919a29..537f213d 100644
--- a/oscarapi/fixtures/voucher.xml
+++ b/oscarapi/fixtures/voucher.xml
@@ -19,6 +19,7 @@
     <field type="PositiveIntegerField" name="num_applications">0</field>
     <field type="PositiveIntegerField" name="num_orders">0</field>
     <field type="CharField" name="redirect_url"></field>
+    <field type="BooleanField" name="exclusive">False</field>
     <field type="DateTimeField" name="date_created">2015-11-27T15:38:48.134807+00:00</field>
   </object>
   <object pk="2" model="offer.benefit">
diff --git a/oscarapi/settings.py b/oscarapi/settings.py
index 542e11ba..67408e2a 100644
--- a/oscarapi/settings.py
+++ b/oscarapi/settings.py
@@ -5,6 +5,7 @@
 `OSCARAPI_`. So :const:`oscarapi.settings.EXPOSE_USER_DETAILS` becomes:
 `OSCARAPI_EXPOSE_USER_DETAILS`
 """
+
 from django.contrib.auth import get_user_model
 from oscarapi.utils.settings import overridable
 from oscarapi import version
diff --git a/sandbox/settings/sandbox.py b/sandbox/settings/sandbox.py
index 749540ac..b3fde016 100644
--- a/sandbox/settings/sandbox.py
+++ b/sandbox/settings/sandbox.py
@@ -160,7 +160,6 @@
     'django.middleware.common.CommonMiddleware',
     'oscarapi.middleware.HeaderSessionMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
-    "django.contrib.sessions.middleware.SessionMiddleware",
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',