diff --git a/service/embedding_search.py b/service/embedding_search.py
index 319200b..aeff29c 100644
--- a/service/embedding_search.py
+++ b/service/embedding_search.py
@@ -161,7 +161,7 @@ class EmbeddingSearchService:
             if self.collection_id != self.title_index.collection_id:
                 async with PageIndexHelper(self.dbs, self.title_index.collection_id) as old_page_index:
                     await old_page_index.init_table()
-                    old_page_index.remove_by_page_id(self.page_id)
+                    await old_page_index.remove_by_page_id(self.page_id)
                 self.title_index.collection_id = self.collection_id
 
             await self.title_index_helper.update(self.title_index)