diff --git a/codex-rs/core/src/tools/parallel.rs b/codex-rs/core/src/tools/parallel.rs
index dbea7e972c..12ff8ffa53 100644
--- a/codex-rs/core/src/tools/parallel.rs
+++ b/codex-rs/core/src/tools/parallel.rs
@@ -527,7 +527,7 @@ mod tests {
             .await
             .expect("timed out waiting for tool response")
             .expect("tool response task should join")?;
-        let ResponseInputItem::FunctionCallOutput { output, .. } = response else {
+        let ResponseInputItem::FunctionCallOutput { output, .. } = response.response_item else {
             anyhow::bail!("cancelled tool should return function output");
         };
         let FunctionCallOutputBody::Text(text) = output.body else {
diff --git a/codex-rs/core/src/tools/registry_tests.rs b/codex-rs/core/src/tools/registry_tests.rs
index f2566251c5..036620801e 100644
--- a/codex-rs/core/src/tools/registry_tests.rs
+++ b/codex-rs/core/src/tools/registry_tests.rs
@@ -329,6 +329,7 @@ fn post_tool_use_feedback_output_keeps_code_mode_result_typed() {
             ),
         }),
         post_tool_use_payload: None,
+        history_truncation_policy: None,
     };
 
     assert_eq!(
@@ -356,6 +357,7 @@ fn post_tool_use_feedback_output_keeps_code_mode_result_typed() {
             ),
         }),
         post_tool_use_payload: None,
+        history_truncation_policy: None,
     };
 
     assert_eq!(