diff --git a/types/p-defer/p-defer-tests.ts b/types/p-defer/p-defer-tests.ts
index ad6c771590..9ea4647620 100644
--- a/types/p-defer/p-defer-tests.ts
+++ b/types/p-defer/p-defer-tests.ts
@@ -7,3 +7,7 @@ function delay(deferred: pDefer.DeferredPromise<string>,  ms: number) {
 
 let s: string;
 async function f() { s = await delay(pDefer<string>(), 100); }
+
+async function u() {
+	const u: Promise<any> = pDefer().resolve();
+}