diff --git a/tacker/tests/unit/test_wsgi.py b/tacker/tests/unit/test_wsgi.py
index 4d5f556bd..5071becbb 100644
--- a/tacker/tests/unit/test_wsgi.py
+++ b/tacker/tests/unit/test_wsgi.py
@@ -616,7 +616,7 @@ class ResourceTest(base.BaseTestCase):
         resource = wsgi.Resource(Controller(), my_fault_body_function)
         request = FakeRequest()
         result = resource(request)
-        self.assertEqual(400, result.status_int)
+        self.assertEqual(415, result.status_int)
 
     def test_type_error(self):
         class Controller(object):
diff --git a/tacker/wsgi.py b/tacker/wsgi.py
index 665f38252..f81d98ab3 100644
--- a/tacker/wsgi.py
+++ b/tacker/wsgi.py
@@ -787,7 +787,7 @@ class Resource(Application):
             action, args, accept = self.deserializer.deserialize(request)
         except exception.InvalidContentType:
             LOG.exception("InvalidContentType: Unsupported Content-Type")
-            return Fault(webob.exc.HTTPBadRequest(
+            return Fault(webob.exc.HTTPUnsupportedMediaType(
                 explanation=_("Unsupported Content-Type")))
         except exception.MalformedRequestBody:
             LOG.exception("MalformedRequestBody: Malformed request body")