diff --git a/spec.bs b/spec.bs
index 276c4dd..6d39bfd 100644
--- a/spec.bs
+++ b/spec.bs
@@ -143,6 +143,7 @@ dictionary StorageAccessTypes {
   boolean SharedWorker = false;
 };
 
+[Exposed=Window]
 interface StorageAccessHandle {
   readonly attribute Storage sessionStorage;
   readonly attribute Storage localStorage;