diff --git a/httpd.py b/httpd.py
index dc2780c..7ae8ac5 100644
--- a/httpd.py
+++ b/httpd.py
@@ -1588,7 +1588,7 @@ class ProxyAPIServer(threading.Thread):
                 rows = db.execute(sql, args).fetchall()
 
                 if fmt == 'plain':
-                    return '\n'.join('%s:%s' % (r[0], r[1]) for r in rows), 'text/plain', 200
+                    return '\n'.join('%s://%s:%s' % (r[2] or 'http', r[0], r[1]) for r in rows), 'text/plain', 200
                 proxies = [{
                     'proxy': '%s:%s' % (r[0], r[1]), 'proto': r[2], 'country': r[3],
                     'asn': r[4], 'latency': r[5],