diff --git a/senlin/api/openstack/v1/profiles.py b/senlin/api/openstack/v1/profiles.py
index 9a4ad92ff..862fdc15a 100644
--- a/senlin/api/openstack/v1/profiles.py
+++ b/senlin/api/openstack/v1/profiles.py
@@ -132,15 +132,13 @@ class ProfileController(object):
         if profile_data is None:
             raise exc.HTTPBadRequest(_("Malformed request data, missing "
                                        "'profile' key in request body."))
-        # spec can be empty in an update request
+        # We ignore the 'spec' property even if it is specified.
         name = profile_data.get(consts.PROFILE_NAME, None)
-        spec = profile_data.get(consts.PROFILE_SPEC, None)
         permission = profile_data.get(consts.PROFILE_PERMISSION, None)
         metadata = profile_data.get(consts.PROFILE_METADATA, None)
         # We don't check if type is specified or not
         profile = self.rpc_client.profile_update(req.context, profile_id,
-                                                 name, spec, permission,
-                                                 metadata)
+                                                 name, permission, metadata)
 
         return {'profile': profile}
 
diff --git a/senlin/rpc/client.py b/senlin/rpc/client.py
index 0e4ed3faf..f0eb6e01f 100644
--- a/senlin/rpc/client.py
+++ b/senlin/rpc/client.py
@@ -97,13 +97,11 @@ class EngineClient(object):
         return self.call(ctxt,
                          self.make_msg('profile_get', identity=identity))
 
-    def profile_update(self, ctxt, profile_id, name, spec, permission,
-                       metadata):
+    def profile_update(self, ctxt, profile_id, name, permission, metadata):
         return self.call(ctxt,
                          self.make_msg('profile_update',
                                        profile_id=profile_id,
-                                       name=name, spec=spec,
-                                       permission=permission,
+                                       name=name, permission=permission,
                                        metadata=metadata))
 
     def profile_delete(self, ctxt, identity, cast=True):
diff --git a/senlin/tests/unit/apiv1/test_profiles.py b/senlin/tests/unit/apiv1/test_profiles.py
index 0bb830345..0c150d309 100644
--- a/senlin/tests/unit/apiv1/test_profiles.py
+++ b/senlin/tests/unit/apiv1/test_profiles.py
@@ -488,6 +488,7 @@ class ProfileControllerTest(shared.ControllerTest, base.SenlinTestCase):
         args = copy.deepcopy(body['profile'])
         args['profile_id'] = pid
         args['permission'] = None
+        del args['spec']
         mock_call.assert_called_with(req.context, ('profile_update', args))
 
         expected = {'profile': engine_resp}
@@ -558,7 +559,6 @@ class ProfileControllerTest(shared.ControllerTest, base.SenlinTestCase):
 
         args = copy.deepcopy(body['profile'])
         args['profile_id'] = pid
-        args['spec'] = None
         mock_call.assert_called_with(req.context, ('profile_update', args))
 
         expected = {'profile': engine_response}
@@ -590,39 +590,6 @@ class ProfileControllerTest(shared.ControllerTest, base.SenlinTestCase):
         self.assertEqual(404, resp.json['code'])
         self.assertEqual('ProfileNotFound', resp.json['error']['type'])
 
-    def test_profile_update_with_spec_validation_failed(self, mock_enforce):
-        self._mock_enforce_setup(mock_enforce, 'update', True)
-        pid = 'aaaa-bbbb-cccc'
-        body = {
-            'profile': {
-                'name': 'test_profile',
-                'spec': {'param4': 'value4'},
-            }
-        }
-        req = self._put('/profiles/%(profile_id)s' % {'profile_id': pid},
-                        json.dumps(body))
-
-        msg = 'Spec validation error (param): value'
-        error = senlin_exc.SpecValidationFailed(message=msg)
-        mock_call = self.patchobject(rpc_client.EngineClient, 'call',
-                                     side_effect=error)
-
-        resp = shared.request_with_middleware(fault.FaultWrapper,
-                                              self.controller.update,
-                                              req, tenant_id=self.project,
-                                              profile_id=pid,
-                                              body=body)
-
-        expected_args = body['profile']
-        expected_args['permission'] = None
-        expected_args['metadata'] = None
-        expected_args['profile_id'] = pid
-        mock_call.assert_called_once_with(req.context,
-                                          ('profile_update', expected_args))
-        self.assertEqual(400, resp.json['code'])
-        self.assertEqual('SpecValidationFailed', resp.json['error']['type'])
-        self.assertIsNone(resp.json['error']['traceback'])
-
     def test_profile_update_denied_policy(self, mock_enforce):
         self._mock_enforce_setup(mock_enforce, 'update', False)
         pid = 'aaaa-bbbb-cccc'
diff --git a/senlin/tests/unit/test_rpc_client.py b/senlin/tests/unit/test_rpc_client.py
index 2086fafe8..44ed54ecd 100644
--- a/senlin/tests/unit/test_rpc_client.py
+++ b/senlin/tests/unit/test_rpc_client.py
@@ -185,7 +185,6 @@ class EngineRpcAPITestCase(base.SenlinTestCase):
         default_args = {
             'profile_id': 'aaaa-bbbb-cccc',
             'name': mock.ANY,
-            'spec': mock.ANY,
             'permission': mock.ANY,
             'metadata': mock.ANY,
         }