diff --git a/deepsearcher/agent/deep_search.py b/deepsearcher/agent/deep_search.py
index c059af5..f912084 100644
--- a/deepsearcher/agent/deep_search.py
+++ b/deepsearcher/agent/deep_search.py
@@ -6,8 +6,7 @@ from deepsearcher.utils.message_stream import send_info, send_answer
 from deepsearcher.vector_db import RetrievalResult
 from deepsearcher.vector_db.base import BaseVectorDB, deduplicate
 from collections import defaultdict
-import os
-import urllib.parse
+from pathlib import Path
 
 
 
@@ -435,7 +434,7 @@ class DeepSearch(BaseAgent):
             print(formated_chunk)
             formated_chunks.append(formated_chunk)
             chunk_count += len(ref_dict[reference])
-            formated_refs.append(f"[^{i + 1}]: "  + str(urllib.parse.quote_plus('file://' + str(os.path.abspath(reference)))) + "\n")
+            formated_refs.append(f"[^{i + 1}]: "  + Path(str(Path(reference).resolve())).as_uri() + "\n")
         formated_chunks = "".join(formated_chunks)
         formated_refs = "".join(formated_refs)
         return formated_chunks, formated_refs