diff --git a/lock_tokens/models.py b/lock_tokens/models.py
index <HASH>..<HASH> 100644
--- a/lock_tokens/models.py
+++ b/lock_tokens/models.py
@@ -57,7 +57,7 @@ class LockToken(models.Model):
           locked_object_content_type=self.locked_object_content_type)
       if token.has_expired():
         token.delete()
-        return super(LockToken, self).save(*args, **opts)
+        return self.save(*args, **opts)
       raise AlreadyLockedError
 
   class Meta:
Prevent race condition when trying to save LockToken for object after deleting expired one