diff --git a/src/terminal/metadata.rs b/src/terminal/metadata.rs
index 91b1d582..e82a5a3a 100644
--- a/src/terminal/metadata.rs
+++ b/src/terminal/metadata.rs
@@ -861,7 +861,9 @@ mod tests {
             clear_title: false,
             clear_display_agent: false,
             clear_state_labels: false,
-            ttl: Some(Duration::from_millis(1)),
+            // Expiry is forced with the captured deadline below; keep the
+            // no-extension assertion independent of wall-clock scheduling.
+            ttl: Some(Duration::from_secs(60)),
             seq: None,
         });
         let old_deadline = terminal.next_agent_metadata_expiry().unwrap();