diff --git a/fbchat/utils.py b/fbchat/utils.py
index 1ab4290..07131ec 100644
--- a/fbchat/utils.py
+++ b/fbchat/utils.py
@@ -145,6 +145,7 @@ class ReqUrl(object):
     UPDATE_VOTE = "https://www.facebook.com/messaging/group_polling/update_vote/?dpr=1"
     GET_POLL_OPTIONS = "https://www.facebook.com/ajax/mercury/get_poll_options"
     SEARCH_MESSAGES = "https://www.facebook.com/ajax/mercury/search_snippets.php?dpr=1"
+    MARK_SPAM = "https://www.facebook.com/ajax/mercury/mark_spam.php?dpr=1"
   
     pull_channel = 0