diff --git a/pandora/document/models.py b/pandora/document/models.py
index a7659aa8..8c9f676d 100644
--- a/pandora/document/models.py
+++ b/pandora/document/models.py
@@ -599,7 +599,7 @@ class Document(models.Model):
 
     def update_linked_documents(self):
         if self.extension == 'html':
-            old = [d.id for id in self.linked_documents.all()]
+            old = [d.id for d in self.linked_documents.all()]
             current = utils.get_documents(self.data.get('text', ''))
             removed = list(set(old) - set(current))
             added = list(set(current) - set(old))