diff --git a/airbyte-integrations/connectors/source-facebook-marketing/source_facebook_marketing/source.py b/airbyte-integrations/connectors/source-facebook-marketing/source_facebook_marketing/source.py
index e6c4b93e2f0d..811d3c41b84a 100644
--- a/airbyte-integrations/connectors/source-facebook-marketing/source_facebook_marketing/source.py
+++ b/airbyte-integrations/connectors/source-facebook-marketing/source_facebook_marketing/source.py
@@ -258,10 +258,6 @@ def spec(self, *args, **kwargs) -> ConnectorSpecification:
                                 "type": "string",
                                 "path_in_connector_config": ["credentials", "access_token"],
                             },
-                            "auth_type": {
-                                "type": "string",
-                                "path_in_connector_config": ["credentials", "auth_type"],
-                            },
                         },
                     },
                     complete_oauth_server_input_specification={
@@ -283,10 +279,6 @@ def spec(self, *args, **kwargs) -> ConnectorSpecification:
                                 "type": "string",
                                 "path_in_connector_config": ["credentials", "client_secret"],
                             },
-                            "auth_type": {
-                                "type": "string",
-                                "path_in_connector_config": ["credentials", "auth_type"],
-                            },
                         },
                     },
                 ),