diff --git a/www/modpythoncustom.py b/www/modpythoncustom.py
index 80ad150ed890a3dca2a8d4b9c17ca94c051dc01a..f5e0a14e9641a9791df42ed79a93e976150e16d6 100644
--- a/www/modpythoncustom.py
+++ b/www/modpythoncustom.py
@@ -42,7 +42,7 @@ del handler
 
 class ModPythonRequest(ModPythonRequest):
     def is_secure(self):
-        return self._req.get_options().has_key('HTTPS') and self._req.get_options()['HTTPS'] == 'on'
+        return 'HTTPS' in self._req.get_options() and self._req.get_options()['HTTPS'] == 'on'
 
 class ModPythonHandler(BaseHandler):
     request_class = ModPythonRequest