diff --git a/rest_framework/generics.py b/rest_framework/generics.py
index aea636f15..117c98ade 100644
--- a/rest_framework/generics.py
+++ b/rest_framework/generics.py
@@ -388,10 +388,11 @@ class GenericAPIView(views.APIView):
             if method not in self.allowed_methods:
                 continue
 
-            cloned_request = clone_request(request, method)
+            original_request = clone_request(request, request.method)
+            self.request = clone_request(request, method)
             try:
                 # Test global permissions
-                self.check_permissions(cloned_request)
+                self.check_permissions(self.request)
                 # Test object permissions
                 if method == 'PUT':
                     try:
@@ -409,6 +410,7 @@ class GenericAPIView(views.APIView):
                 # appropriate metadata about the fields that should be supplied.
                 serializer = self.get_serializer()
                 actions[method] = serializer.metadata()
+                self.request = original_request
 
         if actions:
             ret['actions'] = actions
diff --git a/rest_framework/runtests/runtests.py b/rest_framework/runtests/runtests.py
index 2daaae4ee..55eabfaa8 100755
--- a/rest_framework/runtests/runtests.py
+++ b/rest_framework/runtests/runtests.py
@@ -43,7 +43,6 @@ def main():
     test_module_name = 'rest_framework.tests'
     if django.VERSION[0] == 1 and django.VERSION[1] < 6:
         test_module_name = 'tests'
-
     failures = test_runner.run_tests([test_module_name + test_case])
 
     sys.exit(failures)
diff --git a/rest_framework/tests/test_generics.py b/rest_framework/tests/test_generics.py
index 57d327cc6..1b97efd3a 100644
--- a/rest_framework/tests/test_generics.py
+++ b/rest_framework/tests/test_generics.py
@@ -681,3 +681,31 @@ class TestFilterBackendAppliedToViews(TestCase):
         response = view(request).render()
         self.assertContains(response, 'field_b')
         self.assertNotContains(response, 'field_a')
+
+    def test_options_with_dynamic_serializer(self):
+        """
+        Ensure that OPTIONS returns correct POST json schema: DynamicSerializer with single field 'field_b'
+        """
+        request = factory.options('/')
+        view = DynamicSerializerView.as_view()
+        with self.assertNumQueries(0):
+            response = view(request).render()
+        expected = {
+            'name': 'Dynamic Serializer',
+            'description': '',
+            'renders': ['text/html', 'application/json'],
+            'parses': ['application/json', 'application/x-www-form-urlencoded', 'multipart/form-data'],
+            'actions': {
+                'POST': {
+                    'field_b': {
+                        'type': 'string',
+                        'required': True,
+                        'read_only': False,
+                        'label': 'field b',
+                        'max_length': 100
+                    }
+                }
+            }
+        }
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data, expected)