diff --git a/doc/api/n-api.md b/doc/api/n-api.md
index de56daf1c6fd56..c5e3ef4fbcc100 100644
--- a/doc/api/n-api.md
+++ b/doc/api/n-api.md
@@ -4060,7 +4060,8 @@ napi_status napi_queue_async_work(napi_env env,
 Returns `napi_ok` if the API succeeded.
 
 This API requests that the previously allocated work be scheduled
-for execution.
+for execution. Once it returns successfully, this API must not be called again
+with the same `napi_async_work` item or the result will be undefined.
 
 ### napi_cancel_async_work
 <!-- YAML