diff --git a/codex-rs/core/src/rollout/tests.rs b/codex-rs/core/src/rollout/tests.rs
index ab5041d909..2c4a0050c9 100644
--- a/codex-rs/core/src/rollout/tests.rs
+++ b/codex-rs/core/src/rollout/tests.rs
@@ -724,7 +724,7 @@ async fn test_head_summary_includes_first_user_message_beyond_head_limit() {
         .iter()
         .filter_map(|value| serde_json::from_value::<ResponseItem>(value.clone()).ok())
         .find_map(|item| match event_mapping::parse_turn_item(&item) {
-            Some(TurnItem::UserMessage(user)) => Some(user.message().to_string()),
+            Some(TurnItem::UserMessage(user)) => Some(user.message()),
             _ => None,
         });