diff --git a/src/drf_yasg/renderers.py b/src/drf_yasg/renderers.py
index a1a7b61..276e4a5 100644
--- a/src/drf_yasg/renderers.py
+++ b/src/drf_yasg/renderers.py
@@ -123,7 +123,7 @@ class SwaggerUIRenderer(_UIRenderer):
         super(SwaggerUIRenderer, self).set_context(renderer_context, swagger)
         swagger_ui_settings = self.get_swagger_ui_settings()
 
-        request = renderer_context['request']
+        request = renderer_context.get('request', None)
         oauth_redirect_url = force_text(swagger_ui_settings.get('oauth2RedirectUrl', ''))
         if request and oauth_redirect_url:
             swagger_ui_settings['oauth2RedirectUrl'] = request.build_absolute_uri(oauth_redirect_url)
diff --git a/testproj/testproj/urls.py b/testproj/testproj/urls.py
index b8707fb..09e8211 100644
--- a/testproj/testproj/urls.py
+++ b/testproj/testproj/urls.py
@@ -47,6 +47,12 @@ def root_redirect(request):
     return redirect(schema_view, permanent=True)
 
 
+# urlpatterns required for settings values
+required_urlpatterns = [
+    url(r'^admin/', admin.site.urls),
+    url(r'^o/', include('oauth2_provider.urls', namespace='oauth2_provider')),
+]
+
 urlpatterns = [
     url(r'^swagger(?P<format>.json|.yaml)$', SchemaView.without_ui(cache_timeout=0), name='schema-json'),
     url(r'^swagger/$', SchemaView.with_ui('swagger', cache_timeout=0), name='schema-swagger-ui'),
@@ -59,13 +65,10 @@ urlpatterns = [
 
     url(r'^$', root_redirect),
 
-    url(r'^admin/', admin.site.urls),
-    url(r'^o/', include('oauth2_provider.urls', namespace='oauth2_provider')),
-
     url(r'^snippets/', include('snippets.urls')),
     url(r'^articles/', include('articles.urls')),
     url(r'^users/', include('users.urls')),
     url(r'^todo/', include('todo.urls')),
     url(r'^people/', include('people.urls')),
     url(r'^plain/', plain_view),
-]
+] + required_urlpatterns
diff --git a/tests/urlconfs/login_test_urls.py b/tests/urlconfs/login_test_urls.py
index 831af1d..67617f6 100644
--- a/tests/urlconfs/login_test_urls.py
+++ b/tests/urlconfs/login_test_urls.py
@@ -1,11 +1,13 @@
 from django.conf.urls import url
 
+from testproj.urls import required_urlpatterns
+
 
 def dummy(request):
     pass
 
 
-urlpatterns = [
+urlpatterns = required_urlpatterns + [
     url(r'^test/login$', dummy, name='login'),
     url(r'^test/logout$', dummy, name='logout'),
 ]
diff --git a/tests/urlconfs/ns_version1.py b/tests/urlconfs/ns_version1.py
index 8d22a56..15c1d18 100644
--- a/tests/urlconfs/ns_version1.py
+++ b/tests/urlconfs/ns_version1.py
@@ -3,6 +3,7 @@ from rest_framework import generics, versioning
 
 from snippets.models import Snippet
 from snippets.serializers import SnippetSerializer
+from testproj.urls import required_urlpatterns
 
 
 class SnippetList(generics.ListCreateAPIView):
@@ -21,6 +22,6 @@ class SnippetList(generics.ListCreateAPIView):
 
 app_name = 'test_ns_versioning'
 
-urlpatterns = [
+urlpatterns = required_urlpatterns + [
     url(r"^$", SnippetList.as_view())
 ]
diff --git a/tests/urlconfs/ns_version2.py b/tests/urlconfs/ns_version2.py
index ea184a5..53fa0a1 100644
--- a/tests/urlconfs/ns_version2.py
+++ b/tests/urlconfs/ns_version2.py
@@ -2,6 +2,7 @@ from django.conf.urls import url
 from rest_framework import fields
 
 from snippets.serializers import SnippetSerializer
+from testproj.urls import required_urlpatterns
 
 from .ns_version1 import SnippetList as SnippetListV1
 
@@ -19,6 +20,6 @@ class SnippetListV2(SnippetListV1):
 
 app_name = '2.0'
 
-urlpatterns = [
+urlpatterns = required_urlpatterns + [
     url(r"^$", SnippetListV2.as_view())
 ]
diff --git a/tests/urlconfs/ns_versioning.py b/tests/urlconfs/ns_versioning.py
index 346f485..0a1faba 100644
--- a/tests/urlconfs/ns_versioning.py
+++ b/tests/urlconfs/ns_versioning.py
@@ -1,7 +1,7 @@
 from django.conf.urls import include, url
 from rest_framework import versioning
 
-from testproj.urls import SchemaView
+from testproj.urls import SchemaView, required_urlpatterns
 
 from . import ns_version1, ns_version2
 
@@ -17,7 +17,7 @@ schema_patterns = [
 ]
 
 
-urlpatterns = [
+urlpatterns = required_urlpatterns + [
     url(VERSION_PREFIX_NS + r"v1.0/snippets/", include(ns_version1, namespace='1.0')),
     url(VERSION_PREFIX_NS + r"v2.0/snippets/", include(ns_version2)),
     url(VERSION_PREFIX_NS + r'v1.0/', include((schema_patterns, '1.0'))),
diff --git a/tests/urlconfs/url_versioning.py b/tests/urlconfs/url_versioning.py
index 7c09e59..f76d912 100644
--- a/tests/urlconfs/url_versioning.py
+++ b/tests/urlconfs/url_versioning.py
@@ -3,7 +3,7 @@ from rest_framework import fields, generics, versioning
 
 from snippets.models import Snippet
 from snippets.serializers import SnippetSerializer
-from testproj.urls import SchemaView
+from testproj.urls import SchemaView, required_urlpatterns
 
 
 class SnippetSerializerV2(SnippetSerializer):
@@ -42,7 +42,7 @@ class VersionedSchemaView(SchemaView):
     versioning_class = versioning.URLPathVersioning
 
 
-urlpatterns = [
+urlpatterns = required_urlpatterns + [
     url(VERSION_PREFIX_URL + r"snippets/$", SnippetList.as_view()),
     url(VERSION_PREFIX_URL + r'swagger(?P<format>.json|.yaml)$', VersionedSchemaView.without_ui(), name='vschema-json'),
 ]