diff --git a/account/migrations/0010_remove_user_login_failed_counter.py b/account/migrations/0010_remove_user_login_failed_counter.py
new file mode 100644
index 0000000..61e09f1
--- /dev/null
+++ b/account/migrations/0010_remove_user_login_failed_counter.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0009_user_reset_password_token_create_time'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='user',
+            name='login_failed_counter',
+        ),
+    ]
diff --git a/template/src/oj/announcement/announcement.html b/template/src/oj/announcement/announcement.html
index 2ce84a1..8cbc239 100644
--- a/template/src/oj/announcement/announcement.html
+++ b/template/src/oj/announcement/announcement.html
@@ -10,11 +10,10 @@
             作者：{{ announcement.created_by }}
                
             创建时间：{{ announcement.create_time }}
-            {% ifequal announcement.create_time announcement.last_update_time %}
-            {% else %}
+            {% ifnotequal announcement.create_time announcement.last_update_time %}
                    
                 最后更新：{{ announcement.last_update_time }}
-            {% endifequal %}
+            {% endifnotequal %}
         </p>
 
         <div>