diff --git a/fbchat/utils.py b/fbchat/utils.py
index 82ab364..8e10d31 100644
--- a/fbchat/utils.py
+++ b/fbchat/utils.py
@@ -1,7 +1,7 @@
 import re
 import json
 from time import time
-
+from random import random, choice
 USER_AGENTS = [
     "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36",
     "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/601.1.10 (KHTML, like Gecko) Version/8.0.5 Safari/601.1.10",