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-rw-r--r--lib/sqlalchemy/orm/base.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/base.py b/lib/sqlalchemy/orm/base.py
index 875443e60..c3f95fa10 100644
--- a/lib/sqlalchemy/orm/base.py
+++ b/lib/sqlalchemy/orm/base.py
@@ -327,7 +327,7 @@ def _is_mapped_class(entity):
insp = inspection.inspect(entity, False)
return insp is not None and \
- hasattr(insp, "mapper") and \
+ not insp.is_clause_element and \
(
insp.is_mapper
or insp.is_aliased_class