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-rw-r--r--lib/sqlalchemy/orm/path_registry.py1
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/path_registry.py b/lib/sqlalchemy/orm/path_registry.py
index 59ae082bb..1698a5181 100644
--- a/lib/sqlalchemy/orm/path_registry.py
+++ b/lib/sqlalchemy/orm/path_registry.py
@@ -273,7 +273,6 @@ class PropRegistry(PathRegistry):
elif (
insp.is_aliased_class
and insp.with_polymorphic_mappers
- and prop.parent is not insp.mapper
and prop.parent in insp.with_polymorphic_mappers
):
subclass_entity = parent[-1]._entity_for_mapper(prop.parent)