diff --git a/tests/headless/browser-storage-cases.mjs b/tests/headless/browser-storage-cases.mjs
index dac2df5..fa40318 100644
--- a/tests/headless/browser-storage-cases.mjs
+++ b/tests/headless/browser-storage-cases.mjs
@@ -757,7 +757,7 @@ export async function run() {
     await storage.commit(leader, { image: image(1) });
     await rejects(() => storage.commit(leader, { image: { ...image(1), payload: null } }), 'storage_revision_conflict');
     await rejects(() => storage.commit(leader, { image: image(3) }), 'storage_revision_gap');
-    await rejects(() => storage.commit(leader, { image: { ...image(2), formatVersion: 16 } }), 'unsupported_recovery_version');
+    await rejects(() => storage.commit(leader, { image: { ...image(2), formatVersion: 17 } }), 'unsupported_recovery_version');
     results.push('same-cut retry is idempotent; conflicting, skipped and future-format cuts reject');
 
     // The first put succeeds before a later duplicate resource aborts the whole transaction.