diff --git a/tests/queryset_pickle/tests.py b/tests/queryset_pickle/tests.py
index 384073ad56..602739fa54 100644
--- a/tests/queryset_pickle/tests.py
+++ b/tests/queryset_pickle/tests.py
@@ -94,3 +94,15 @@ class PickleabilityTestCase(TestCase):
     def test_specialized_queryset(self):
         self.assert_pickles(Happening.objects.values('name'))
         self.assert_pickles(Happening.objects.values('name').dates('when', 'year'))
+
+    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)