diff --git a/clickhouse_backend/backend/schema.py b/clickhouse_backend/backend/schema.py
index e6ffdaa..d7b3f23 100644
--- a/clickhouse_backend/backend/schema.py
+++ b/clickhouse_backend/backend/schema.py
@@ -213,7 +213,7 @@ def _model_indexes_sql(self, model):
         )
         if (
             any(field.db_index for field in model._meta.local_fields)
-            or model._meta.index_together
+            or getattr(model._meta, "index_together", None)
         ):
             warnings.warn(msg)