diff --git a/web/src/pages/next-search/search-setting.tsx b/web/src/pages/next-search/search-setting.tsx
index 529c8666d..982b0bba1 100644
--- a/web/src/pages/next-search/search-setting.tsx
+++ b/web/src/pages/next-search/search-setting.tsx
@@ -130,7 +130,7 @@ const SearchSetting: React.FC<SearchSettingProps> = ({
           search_config?.vector_similarity_weight ?? 0.3,
         web_search: search_config?.web_search || false,
         doc_ids: [],
-        similarity_threshold: search_config?.similarity_threshold || 0.2,
+        similarity_threshold: search_config?.similarity_threshold ?? 0.2,
         use_kg: false,
         rerank_id: search_config?.rerank_id || '',
         use_rerank: search_config?.rerank_id ? true : false,