diff --git a/codex-rs/core/tests/suite/guardian_review.rs b/codex-rs/core/tests/suite/guardian_review.rs
index 5b76d09ae9..df38fb4353 100644
--- a/codex-rs/core/tests/suite/guardian_review.rs
+++ b/codex-rs/core/tests/suite/guardian_review.rs
@@ -118,6 +118,7 @@ printf '%s\n' "${@: -1}" >> "${payload_path}""#,
             }],
             final_output_json_schema: None,
             responsesapi_client_metadata: None,
+            additional_context: Default::default(),
             thread_settings: codex_protocol::protocol::ThreadSettingsOverrides {
                 cwd: Some(test.cwd.path().to_path_buf()),
                 approval_policy: Some(approval_policy),