diff --git a/rag/app/book.py b/rag/app/book.py
index 294f0d7cb27..a76513e2b60 100644
--- a/rag/app/book.py
+++ b/rag/app/book.py
@@ -67,7 +67,7 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
     doc["title_sm_tks"] = huqie.qieqie(doc["title_tks"])
     pdf_parser = None
     sections, tbls = [], []
-    if re.search(r"\.docx?$", filename, re.IGNORECASE):
+    if re.search(r"\.docx$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         doc_parser = DocxParser()
         # TODO: table of contents need to be removed
diff --git a/rag/app/laws.py b/rag/app/laws.py
index 947e4dc408a..9b77b4fb704 100644
--- a/rag/app/laws.py
+++ b/rag/app/laws.py
@@ -93,7 +93,7 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
     doc["title_sm_tks"] = huqie.qieqie(doc["title_tks"])
     pdf_parser = None
     sections = []
-    if re.search(r"\.docx?$", filename, re.IGNORECASE):
+    if re.search(r"\.docx$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         for txt in Docx()(filename, binary):
             sections.append(txt)
diff --git a/rag/app/naive.py b/rag/app/naive.py
index 62c1df023f1..0fcbd9fad72 100644
--- a/rag/app/naive.py
+++ b/rag/app/naive.py
@@ -119,7 +119,7 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
     res = []
     pdf_parser = None
     sections = []
-    if re.search(r"\.docx?$", filename, re.IGNORECASE):
+    if re.search(r"\.docx$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         sections, tbls = Docx()(filename, binary)
         res = tokenize_table(tbls, doc, eng)
diff --git a/rag/app/one.py b/rag/app/one.py
index e78c7e97eea..c56f121403e 100644
--- a/rag/app/one.py
+++ b/rag/app/one.py
@@ -60,7 +60,7 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
 
     eng = lang.lower() == "english"  # is_english(cks)
 
-    if re.search(r"\.docx?$", filename, re.IGNORECASE):
+    if re.search(r"\.docx$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
         sections = [txt for txt in laws.Docx()(filename, binary) if txt]
         callback(0.8, "Finish parsing.")