diff --git a/src/objects/managers/object.py b/src/objects/managers/object.py
index 3a0f53ab50..9c3f66d48c 100644
--- a/src/objects/managers/object.py
+++ b/src/objects/managers/object.py
@@ -1,7 +1,6 @@
 """
 Custom manager for Object objects.
 """
-import sets
 from datetime import datetime, timedelta
 
 from django.db import models