diff --git a/api/migrations/versions/2026_01_27_1815-788d3099ae3a_add_summary_index_feature.py b/api/migrations/versions/2026_01_27_1815-788d3099ae3a_add_summary_index_feature.py
index 1707123234..6062ae7b9a 100644
--- a/api/migrations/versions/2026_01_27_1815-788d3099ae3a_add_summary_index_feature.py
+++ b/api/migrations/versions/2026_01_27_1815-788d3099ae3a_add_summary_index_feature.py
@@ -59,7 +59,7 @@ def downgrade():
         batch_op.drop_column('need_summary')
 
     with op.batch_alter_table('datasets', schema=None) as batch_op:
-        batch_op.drop_column('summary_index_setting')ß
+        batch_op.drop_column('summary_index_setting')
 
     with op.batch_alter_table('document_segment_summaries', schema=None) as batch_op:
         batch_op.drop_index('document_segment_summaries_status_idx')