diff --git a/src/commands/check-presigned.ts b/src/commands/check-presigned.ts
index a55ea72..1f27f17 100644
--- a/src/commands/check-presigned.ts
+++ b/src/commands/check-presigned.ts
@@ -37,7 +37,7 @@ export default class CheckPresigned extends Command {
       presignedEntries.forEach(e => this.log(e.srcPath))
 
       if (outPath != undefined) {
-        let newList = await serializeBlobList(presignedEntries)
+        let newList = serializeBlobList(presignedEntries)
         await fs.writeFile(outPath, newList)
       }
     } else {