diff --git a/metaproxy.py b/metaproxy.py
index a1632d2..3f70781 100644
--- a/metaproxy.py
+++ b/metaproxy.py
@@ -28,8 +28,8 @@ def get_metalink():
 
     # Parse the .env file to get the filtering criteria
     excluded_countries = eval(os.getenv('EXCLUDED_COUNTRIES', '[]'))
-    preferred_protocols = eval(os.getenv('PREFERRED_PROTOCOLS', '[]'))
-    preferred_types = eval(os.getenv('PREFERRED_TYPES', '[]'))
+    preferred_protocols = eval(os.getenv('PREFERRED_PROTOCOLS', '["https", "http"]'))
+    preferred_types = eval(os.getenv('PREFERRED_TYPES', '["https", "http"]'))
     min_preference = int(os.getenv('MIN_PREFERENCE', '0'))
 
     # Filter out the URLs based on the criteria
@@ -58,8 +58,11 @@ def filter_urls(content, excluded_countries, preferred_protocols, preferred_type
             preference < min_preference):
             url.decompose()
 
-    # Return the filtered XML as a string
-    return str(soup)
+    # Convert the BeautifulSoup object back to a string and clean up
+    filtered_content = str(soup)
+    filtered_content = '\n'.join(line for line in filtered_content.splitlines() if line.strip())
+
+    return filtered_content
 
 if __name__ == '__main__':
     app.run(debug=True)