diff --git a/tests/test_records.py b/tests/test_records.py
index 9166446..f45b141 100644
--- a/tests/test_records.py
+++ b/tests/test_records.py
@@ -77,12 +77,12 @@ class TestRecordCollection:
         raises(ValueError, rows.one)
 
     def test_one_raises_default_if_its_an_exception_subclass(self):
-        rows = records.RecordCollection(IdRecord(i) for i in range(1))
+        rows = records.RecordCollection(iter([]))
         class Cheese(Exception): pass
         raises(Cheese, rows.one, Cheese)
 
     def test_one_raises_default_if_its_an_exception_instance(self):
-        rows = records.RecordCollection(IdRecord(i) for i in range(1))
+        rows = records.RecordCollection(iter([]))
         class Cheese(Exception): pass
         raises(Cheese, rows.one, Cheese('cheddar'))