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-rw-r--r--django/db/migrations/state.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/django/db/migrations/state.py b/django/db/migrations/state.py
index 5c30c4c8a1..bda077f318 100644
--- a/django/db/migrations/state.py
+++ b/django/db/migrations/state.py
@@ -446,7 +446,8 @@ class ModelState:
elif name == "indexes":
indexes = [idx.clone() for idx in model._meta.indexes]
for index in indexes:
- index.set_name_with_model(model)
+ if not index.name:
+ index.set_name_with_model(model)
options['indexes'] = indexes
else:
options[name] = model._meta.original_attrs[name]