diff --git a/zimwiki_txt_to_logseq_md.py b/zimwiki_txt_to_logseq_md.py
index 0c4516a..21c081a 100644
--- a/zimwiki_txt_to_logseq_md.py
+++ b/zimwiki_txt_to_logseq_md.py
@@ -27,5 +27,5 @@ def rewrite_file(filepath):
 
 
 for filepath in os.listdir():
-    if file.endswith(".txt"):
+    if filepath.endswith(".txt"):
         rewrite_file(filepath)