diff --git a/crates/ui-egui/tests/bookmarks.rs b/crates/ui-egui/tests/bookmarks.rs
index 0477c306f..2d2b3d2c2 100644
--- a/crates/ui-egui/tests/bookmarks.rs
+++ b/crates/ui-egui/tests/bookmarks.rs
@@ -145,6 +145,9 @@ fn search_finds_collapsed_bookmarks_and_keeps_original_paths() {
     h.run_steps(3);
     assert!(h.query_by_label("Résumé results").is_none());
     let id = h.state().views[0].id;
+    // A full save stamps /ModDate from the clock: pin it, or two saves a second apart differ.
+    let session = std::mem::take(&mut h.state_mut().session);
+    h.state_mut().session = session.with_clock(|| 1_700_000_000);
     let before = h.state().session.save_full_bytes(id).unwrap();
     h.get_by_label("Search").click();
     h.run_steps(1);