diff --git a/url2markdown/file.py b/url2markdown/file.py
index 3399b81..545b6c1 100644
--- a/url2markdown/file.py
+++ b/url2markdown/file.py
@@ -2,7 +2,7 @@ import markdownify
 
 
 def write_to_file(article, header):
-    with open(str(article.title) + ".md", 'a') as f:
     markdown = markdownify.markdownify(article.html, heading_style='ATX')
+    with open(str(article.title) + ".md", 'w') as f:
         f.write(header)
         f.write(markdown)