diff --git a/backend/open_webui/retrieval/loaders/main.py b/backend/open_webui/retrieval/loaders/main.py
index f84b2a2b1b..13570c37f0 100644
--- a/backend/open_webui/retrieval/loaders/main.py
+++ b/backend/open_webui/retrieval/loaders/main.py
@@ -50,6 +50,7 @@ known_source_ext = [
     'h',
     'c',
     'cs',
+    'ino',
     'sql',
     'log',
     'ini',