diff --git a/unstructured_ingest/interfaces/connector.py b/unstructured_ingest/interfaces/connector.py
index 9f0bfced0..44217e600 100644
--- a/unstructured_ingest/interfaces/connector.py
+++ b/unstructured_ingest/interfaces/connector.py
@@ -32,7 +32,7 @@ def check_access_config(self):
         return self
 
     def _is_access_config_optional(self) -> bool:
-        access_config_type = self.model_fields["access_config"].annotation
+        access_config_type = self.__class__.model_fields["access_config"].annotation
         return (
             hasattr(access_config_type, "__origin__")
             and hasattr(access_config_type, "__args__")