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-rw-r--r--lib/sqlalchemy/orm/query.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/query.py b/lib/sqlalchemy/orm/query.py
index 3b04575c1..1e9d40c75 100644
--- a/lib/sqlalchemy/orm/query.py
+++ b/lib/sqlalchemy/orm/query.py
@@ -364,7 +364,7 @@ class Query(object):
# to use it in "order_by". insure they are in the column criterion (particularly oid).
# TODO: this should be done at the SQL level not the mapper level
if kwargs.get('distinct', False) and order_by:
- statement.append_column(*util.to_list(order_by))
+ [statement.append_column(c) for c in util.to_list(order_by)]
# plugin point
# give all the attached properties a chance to modify the query