diff --git a/test/intelligence-store.test.mjs b/test/intelligence-store.test.mjs
index 183a719..8ebd328 100644
--- a/test/intelligence-store.test.mjs
+++ b/test/intelligence-store.test.mjs
@@ -40,5 +40,5 @@ test('records LLM ideas as stable predictions', async (t) => {
   assert.equal(result.available, true);
   assert.equal(result.predictions.length, 1);
   assert.equal(result.predictions[0].title, 'Gold safe-haven hedge');
-  assert.match(result.predictions[0].stable_id, /^prediction-/);
+  assert.match(result.predictions[0].stable_id, /^[a-f0-9]{24}$/);
 });