diff --git a/app/routers/site_domain.py b/app/routers/site_domain.py
index a87174c..a2c838d 100644
--- a/app/routers/site_domain.py
+++ b/app/routers/site_domain.py
@@ -109,6 +109,7 @@ async def lookup_site_domain_obj(
     elif access_key:
         sql_access_key_referrer = """
             AND site_domain.domain_access_key = :domain_access_key
+            AND (site_domain.required_referrer IS NULL OR site_domain.required_referrer = '')
             """
     # elif referrer:
     #     sql_access_key_referrer = """