diff --git a/osf/models/spam.py b/osf/models/spam.py
index c6d0a438f5c..993039b1fcf 100644
--- a/osf/models/spam.py
+++ b/osf/models/spam.py
@@ -200,7 +200,6 @@ def do_check_spam(self, author, author_email, content, request_headers):
             'user_agent': request_headers.get('User-Agent'),
             'referer': request_headers.get('Referer'),
         }
-        request_kwargs.update(request_headers)
 
         check_resource_for_domains_postcommit(
             self.guids.first()._id,