diff --git a/code/chapter11/ch11.3.4.py b/code/chapter11/ch11.3.4.py
index 131dc3b..43ceb5d 100644
--- a/code/chapter11/ch11.3.4.py
+++ b/code/chapter11/ch11.3.4.py
@@ -19,9 +19,9 @@ def __init__(self, owner, amount):
 print('利率：{0}'.format(Account.interest_rate))
 
 print('Account利率：{0}'.format(Account.interest_rate))
-print('ac1利率：{0}'.format(account.interest_rate1))
+print('ac1利率：{0}'.format(account.interest_rate))
 
 print('ac1实例所有变量：{0}'.format(account.__dict__))
 account.interest_rate = 0.01
 account.interest_rate2 = 0.01
-print('ac1实例所有变量：{0}'.format(account.__dict__))
\ No newline at end of file
+print('ac1实例所有变量：{0}'.format(account.__dict__))