diff --git a/telethon_examples/print_updates.py b/telethon_examples/print_updates.py
index e315ff98..c90302e4 100755
--- a/telethon_examples/print_updates.py
+++ b/telethon_examples/print_updates.py
@@ -10,7 +10,7 @@ from os import environ
 
 def main():
     session_name = environ.get('TG_SESSION','session')
-    user_phone = environ['TG_PHONE'],
+    user_phone = environ['TG_PHONE']
     client = TelegramClient(session_name,
             int(environ['TG_API_ID']), 
                 environ['TG_API_HASH'],