diff --git a/__init__.py b/__init__.py
index e568118..296ef82 100644
--- a/__init__.py
+++ b/__init__.py
@@ -23,7 +23,7 @@ def article_to_xml(article_path: pathlib.Path):
 
     except Exception as e:
         print(e)
-        return
+        return ""
 
     markdown_instance = markdown.Markdown(extensions=['meta', 'nl2br'])
     html = markdown_instance.convert(markdown_data)