diff --git a/src/utils/DecryptFile.ts b/src/utils/DecryptFile.ts
index 34c42abb65..891439ffe1 100644
--- a/src/utils/DecryptFile.ts
+++ b/src/utils/DecryptFile.ts
@@ -31,7 +31,7 @@ import { getBlobSafeMimeType } from "./blobs";
  */
 export function decryptFile(
     file: IEncryptedFile,
-    info: IMediaEventInfo | undefined,
+    info?: IMediaEventInfo,
 ): Promise<Blob> {
     const media = mediaFromContent({ file });
     // Download the encrypted file as an array buffer.