diff --git a/mongoengine/queryset/manager.py b/mongoengine/queryset/manager.py
index 47c2143d..199205e9 100644
--- a/mongoengine/queryset/manager.py
+++ b/mongoengine/queryset/manager.py
@@ -29,7 +29,7 @@ class QuerySetManager(object):
         Document.objects is accessed.
         """
         if instance is not None:
-            # Document class being used rather than a document object
+            # Document object being used rather than a document class
             return self
 
         # owner is the document that contains the QuerySetManager