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-rw-r--r--django/db/models/sql/query.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index 131e97a438..4c473b6b7e 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -1380,8 +1380,8 @@ class BaseQuery(object):
lhs_col = int_opts.parents[int_model].column
dedupe = lhs_col in opts.duplicate_targets
if dedupe:
- avoid.update(self.dupe_avoidance.get(id(opts), lhs_col),
- ())
+ avoid.update(self.dupe_avoidance.get((id(opts), lhs_col),
+ ()))
dupe_set.add((opts, lhs_col))
int_opts = int_model._meta
alias = self.join((alias, int_opts.db_table, lhs_col,