diff --git a/test/unit/obj/test_server.py b/test/unit/obj/test_server.py
index fab3a92d51..5826376f06 100755
--- a/test/unit/obj/test_server.py
+++ b/test/unit/obj/test_server.py
@@ -1073,6 +1073,13 @@ class TestObjectController(unittest.TestCase):
         resp = req.get_response(self.object_controller)
         self.assertEqual(resp.status_int, 400)
 
+    def test_PUT_bad_timestamp(self):
+        req = Request.blank(
+            '/sda1/p/a/c/o', environ={'REQUEST_METHOD': 'PUT'},
+            headers={'X-Timestamp': 'bad'})
+        resp = req.get_response(self.object_controller)
+        self.assertEqual(resp.status_int, 400)
+
     def test_PUT_no_content_type(self):
         req = Request.blank(
             '/sda1/p/a/c/o', environ={'REQUEST_METHOD': 'PUT'},
@@ -3645,6 +3652,13 @@ class TestObjectController(unittest.TestCase):
         self.assertTrue(os.path.isfile(ts_1003_file))
         self.assertEqual(len(os.listdir(os.path.dirname(ts_1003_file))), 1)
 
+    def test_DELETE_bad_timestamp(self):
+        req = Request.blank(
+            '/sda1/p/a/c/o', environ={'REQUEST_METHOD': 'DELETE'},
+            headers={'X-Timestamp': 'bad'})
+        resp = req.get_response(self.object_controller)
+        self.assertEqual(resp.status_int, 400)
+
     def test_DELETE_succeeds_with_later_POST(self):
         t_put = next(self.ts).internal
         req = Request.blank('/sda1/p/a/c/o',