diff --git a/boards/models.py b/boards/models.py
--- a/boards/models.py
+++ b/boards/models.py
@@ -276,7 +276,7 @@ class Post(models.Model):
             self.last_edit_time = timezone.now()
             self.save()
 
-def get_last_replies(self):
+    def get_last_replies(self):
         if settings.LAST_REPLIES_COUNT > 0:
             reply_count = self.get_reply_count()