diff --git a/mongoengine/queryset.py b/mongoengine/queryset.py
index 00a7f7a2..be29ae83 100644
--- a/mongoengine/queryset.py
+++ b/mongoengine/queryset.py
@@ -135,7 +135,6 @@ class Q(object):
 
         # Handle DBRef
         if isinstance(value, pymongo.dbref.DBRef):
-            # this.created_user.$id == "4c4c56f8cc1831418c000000"
             op_js = '(this.%(field)s.$id == "%(id)s" &&'\
                     ' this.%(field)s.$ref == "%(ref)s")' % {
                         'field': key,