diff --git a/weboob/tools/browser2/filters/standard.py b/weboob/tools/browser2/filters/standard.py
index b66578da..8ccec1d7 100644
--- a/weboob/tools/browser2/filters/standard.py
+++ b/weboob/tools/browser2/filters/standard.py
@@ -101,17 +101,17 @@ def debug(*args):
         def print_debug(self, value):
             logger = getLogger('b2filters')
             name = str(self)
-            result = "%s(%s" % (name, value)
+            result = "%s(%r" % (name, value)
             for arg in self.__dict__:
                 if arg.startswith('_') or arg == u"selector":
                     continue
                 if arg == u'default' and getattr(self, arg) == _NO_DEFAULT:
                     continue
-                result += ", %s=%s" % (arg, getattr(self, arg))
+                result += ", %s=%r" % (arg, getattr(self, arg))
             result += u')'
             logger.debug(result)
             res = function(self, value)
-            logger.debug("%s %s" % (type(res), res))
+            logger.debug("%r" % res)
             return res
         return print_debug
     return wraper