diff --git a/authentic2_idp_ltpa/__init__.py b/authentic2_idp_ltpa/__init__.py
index 66154cf..0a77178 100644
--- a/authentic2_idp_ltpa/__init__.py
+++ b/authentic2_idp_ltpa/__init__.py
@@ -7,3 +7,9 @@ class Plugin(object):
 
     def get_apps(self):
         return [__name__]
+
+from django.utils.six.moves import http_cookies
+import Cookie
+
+_new_legal_chars = http_cookies._quote.func_defaults[0] + '/='
+http_cookies._quote.func_defaults = (_new_legal_chars,) + http_cookies._quote.func_defaults[1:]