diff --git a/cachalot/tests.py b/cachalot/tests.py
index 6a14ef6..36e5871 100644
--- a/cachalot/tests.py
+++ b/cachalot/tests.py
@@ -94,6 +94,11 @@ class ReadTestCase(TestCase):
         self.assertEqual(data2, self.t1)
 
     def test_first(self):
+        with self.assertNumQueries(1):
+            self.assertEqual(Test.objects.filter(name='bad').first(), None)
+        with self.assertNumQueries(0):
+            self.assertEqual(Test.objects.filter(name='bad').first(), None)
+
         with self.assertNumQueries(1):
             data1 = Test.objects.first()
         with self.assertNumQueries(0):