diff --git a/Creating-a-Client.md b/Creating-a-Client.md
index 251d63b..8150f01 100644
--- a/Creating-a-Client.md
+++ b/Creating-a-Client.md
@@ -36,6 +36,8 @@ If you're not authorized, you need to `.sign_in()`:
 client.send_code_request(phone_number)
 myself = client.sign_in(phone_number, input('Enter code: '))
 # If .sign_in raises PhoneNumberUnoccupiedError, use .sign_up instead
+# If .sign_in raises SessionPasswordNeeded error, call .sign_in(password=...)
+# You can import both exceptions from telethon.errors.
 ```
 
 `myself` is your Telegram user. You can view all the information about yourself by doing `print(myself.stringify())`. You're now ready to use the `client` as you wish!
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