diff --git a/tests/queryset_pickle/tests.py b/tests/queryset_pickle/tests.py
index b4b540c80d..58654977c3 100644
--- a/tests/queryset_pickle/tests.py
+++ b/tests/queryset_pickle/tests.py
@@ -90,3 +90,15 @@ class PickleabilityTestCase(TestCase):
         reloaded = pickle.loads(dumped)
         self.assertEqual(original, reloaded)
         self.assertIs(reloaded.__class__, dynclass)
+
+    def test_pickle_prefetch_related_idempotence(self):
+        g = Group.objects.create(name='foo')
+        groups = Group.objects.prefetch_related('event_set')
+
+        # First pickling
+        groups = pickle.loads(pickle.dumps(groups))
+        self.assertQuerysetEqual(groups, [g], lambda x: x)
+
+        # Second pickling
+        groups = pickle.loads(pickle.dumps(groups))
+        self.assertQuerysetEqual(groups, [g], lambda x: x)