Merge branch 'pr204'

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/sqlalchemy/sql/schema.py b/lib/sqlalchemy/sql/schema.py
index e20545962..25eb68f6f 100644
--- a/lib/sqlalchemy/sql/schema.py
+++ b/lib/sqlalchemy/sql/schema.py
@@ -1987,13 +1987,14 @@ class ColumnDefault(DefaultGenerator):
         try:
             argspec = util.get_callable_argspec(fn, no_self=True)
         except TypeError:
-            return lambda ctx: fn()
+            return util.wrap_callable(lambda ctx: fn(), fn)
 
         defaulted = argspec[3] is not None and len(argspec[3]) or 0
         positionals = len(argspec[0]) - defaulted
 
         if positionals == 0:
-            return lambda ctx: fn()
+            return util.wrap_callable(lambda ctx: fn(), fn)
+
         elif positionals == 1:
             return fn
         else: