diff --git a/backend/open_webui/retrieval/utils.py b/backend/open_webui/retrieval/utils.py
index f5db7521b5..aec8de6846 100644
--- a/backend/open_webui/retrieval/utils.py
+++ b/backend/open_webui/retrieval/utils.py
@@ -621,6 +621,7 @@ def get_sources_from_items(
 
                 if knowledge_base and (
                     user.role == "admin"
+                    or knowledge_base.user_id == user.id
                     or has_access(user.id, "read", knowledge_base.access_control)
                 ):