diff --git a/components/script/dom/bindings/codegen/CodegenRust.py b/components/script/dom/bindings/codegen/CodegenRust.py
index a9515fb099d..fab5e1e713a 100644
--- a/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/components/script/dom/bindings/codegen/CodegenRust.py
@@ -1654,6 +1654,8 @@ class MethodDefiner(PropertyDefiner):
             (maplikeOrSetlikeOrIterable and
              maplikeOrSetlikeOrIterable.isIterable() and
              maplikeOrSetlikeOrIterable.isValueIterator())):
+            m = maplikeOrSetlikeOrIterable
+
             # Add our keys/values/entries/forEach
             self.regular.append({
                 "name": "keys",