diff --git a/src/worker.cc b/src/worker.cc
index fbae5ec..3d24cf0 100644
--- a/src/worker.cc
+++ b/src/worker.cc
@@ -41,5 +41,6 @@ void CheckSpellingWorker::HandleOKCallback() {
   }
 
   Local<Value> argv[] = { Nan::Null(), result };
-  callback->Call(2, argv);
+  Nan::AsyncResource resource("CheckSpellingWorker::HandleOKCallback");
+  callback->Call(2, argv, &resource);
 }