diff --git a/boards/admin.py b/boards/admin.py
--- a/boards/admin.py
+++ b/boards/admin.py
@@ -7,7 +7,7 @@ from django.utils.translation import uge
 class PostAdmin(admin.ModelAdmin):
 
     list_display = ('id', 'title', 'text')
-    list_filter = ('pub_time', 'thread_new')
+    list_filter = ('pub_time',)
     search_fields = ('id', 'title', 'text')
     exclude = ('referenced_posts', 'refmap')
     readonly_fields = ('poster_ip', 'thread_new')