diff --git a/rest_framework/tests/test_fields.py b/rest_framework/tests/test_fields.py
index 8126af4df..02f689a20 100644
--- a/rest_framework/tests/test_fields.py
+++ b/rest_framework/tests/test_fields.py
@@ -636,6 +636,8 @@ class DecimalFieldTest(TestCase):
                 model = LongDecimalFieldModel
             decimal_field = serializers.DecimalField(required=False, decimal_places=2)
         
+        serializer = DecimalSerializer(data={})
+        
         self.assertTrue(serializer.is_valid())
         self.assertTrue(serializer.data['decimal_field'].as_tuple().exponent, 0)