diff --git a/test/core/traceur.js b/test/core/traceur.js
index 08bffa9983..21fb4e5fa9 100644
--- a/test/core/traceur.js
+++ b/test/core/traceur.js
@@ -47,6 +47,7 @@ require("./_transformation-helper")({
     "ArrayExtras/From",
     "ArrayExtras/FindIndex",
     "ArrayExtras/Find",
+    "StringIterator",
 
     // TODO
     "Syntax/IsValidSimpleAssignmentTarget",