diff --git a/server/knowledge_base/utils.py b/server/knowledge_base/utils.py
index 41c3ad5..7a92529 100644
--- a/server/knowledge_base/utils.py
+++ b/server/knowledge_base/utils.py
@@ -104,7 +104,7 @@ LOADER_DICT = {"UnstructuredHTMLLoader": ['.html'],
                "SRTLoader": ['.srt'],
                "TomlLoader": ['.toml'],
                "UnstructuredTSVLoader": ['.tsv'],
-               "UnstructuredWordDocumentLoader": ['.docx', 'doc'],
+               "UnstructuredWordDocumentLoader": ['.docx', '.doc'],
                "UnstructuredXMLLoader": ['.xml'],
                "UnstructuredPowerPointLoader": ['.ppt', '.pptx'],
                "EverNoteLoader": ['.enex'],