diff --git a/src/workerd/api/basics.c++ b/src/workerd/api/basics.c++
index 6896b91c48a..c2d3f02c397 100644
--- a/src/workerd/api/basics.c++
+++ b/src/workerd/api/basics.c++
@@ -558,7 +558,7 @@ void ExtendableEvent::waitUntil(kj::Promise<void> promise) {
   IoContext::current().addWaitUntil(kj::mv(promise));
 }
 
-jsg::Optional<jsg::Ref<ActorState>> ExtendableEvent::getActorState(v8::Isolate* isolate) {
+jsg::Optional<jsg::Ref<ActorState>> ExtendableEvent::getActorState() {
   IoContext& context = IoContext::current();
   return context.getActor().map([&](Worker::Actor& actor) {
     auto& lock = context.getCurrentLock();
diff --git a/src/workerd/api/basics.h b/src/workerd/api/basics.h
index b9c97954a0b..578744f576c 100644
--- a/src/workerd/api/basics.h
+++ b/src/workerd/api/basics.h
@@ -174,7 +174,7 @@ class ExtendableEvent: public Event {
 
   void waitUntil(kj::Promise<void> promise);
 
-  jsg::Optional<jsg::Ref<ActorState>> getActorState(v8::Isolate* isolate);
+  jsg::Optional<jsg::Ref<ActorState>> getActorState();
 
   JSG_RESOURCE_TYPE(ExtendableEvent) {
     JSG_INHERIT(Event);