diff --git a/src/wasm.ts b/src/wasm.ts
index 9a4c430..efafb53 100644
--- a/src/wasm.ts
+++ b/src/wasm.ts
@@ -12,5 +12,6 @@ export default async function (imports) {
   // @ts-ignore
   let wasm = await import("./wasm/bao.wasm?init");
   wasm = wasm.default || wasm;
-  return (await wasm(imports)).instance;
+  wasm = await wasm(imports);
+  return wasm.instance;
 }