diff --git a/dj_database_url.py b/dj_database_url.py
index d5bfec7..2885b61 100644
--- a/dj_database_url.py
+++ b/dj_database_url.py
@@ -21,7 +21,7 @@ def config(env=DEFAULT_ENV, default=None):
         s = default
 
     if s:
-        config = parse()
+        config = parse(s)
 
     return config