diff --git a/test/testlib/testing.py b/test/testlib/testing.py
index f843265086..608933a9d0 100644
--- a/test/testlib/testing.py
+++ b/test/testlib/testing.py
@@ -518,7 +518,11 @@ class ComparesTables(object):
             self.assertEquals(set([f.column.name for f in c.foreign_keys]), set([f.column.name for f in reflected_c.foreign_keys]))
             if c.default:
                 assert isinstance(reflected_c.default, schema.PassiveDefault)
+            elif against('mysql', '<', (5, 0)):
+                # ignore reflection of bogus db-generated PassiveDefault()
+                pass
             elif not c.primary_key or not against('postgres'):
+                print repr(c)
                 assert reflected_c.default is None, reflected_c.default
         
         assert len(table.primary_key) == len(reflected_table.primary_key)