diff --git a/cal/db.py b/cal/db.py
index a82b9504e392e81fac1c7142542b597ec6ba5afd..2c5b27464c7721ba5dabc242f2bd23258a4ebe51 100644
--- a/cal/db.py
+++ b/cal/db.py
@@ -5,7 +5,7 @@ import couchdb
 
 class DB:
     def __init__(self, config, app):
-
+# TODO: url-encode the ontent of 'CAL_USR' / 'CAL_PWD'
         usr = os.environ.get('CAL_USR')
         pwd = os.environ.get('CAL_PWD')
         host = config['db']['host']