diff --git a/service-workers/service-worker/resources/interfaces-worker.sub.js b/service-workers/service-worker/resources/interfaces-worker.sub.js
index 10fe14d5becd01..56bc8af445d5e7 100644
--- a/service-workers/service-worker/resources/interfaces-worker.sub.js
+++ b/service-workers/service-worker/resources/interfaces-worker.sub.js
@@ -93,3 +93,7 @@ test(function() {
 test(() => {
     assert_false('XMLHttpRequest' in self);
   }, 'xhr is not exposed');
+
+test(() => {
+    assert_false('createObjectURL' in self.URL);
+  }, 'URL.createObjectURL is not exposed')