diff --git a/oidc/views.py b/oidc/views.py
index ce9e641..c4601bb 100644
--- a/oidc/views.py
+++ b/oidc/views.py
@@ -62,7 +62,7 @@ def dispatch(self, request: HttpRequest, helper) -> Response:  # type: ignore
         if domain in OIDC_DOMAIN_BLOCKLIST:
             return helper.error(ERR_INVALID_DOMAIN % (domain,))
 
-        if OIDC_DOMAIN_ALLOWLIST != set() and domain not in OIDC_DOMAIN_ALLOWLIST:
+        if OIDC_DOMAIN_ALLOWLIST and domain not in OIDC_DOMAIN_ALLOWLIST:
             return helper.error(ERR_INVALID_DOMAIN % (domain,))
 
         helper.bind_state("domain", domain)