diff --git a/src/commands/lock.ts b/src/commands/lock.ts
index 9281f69..163cbc5 100644
--- a/src/commands/lock.ts
+++ b/src/commands/lock.ts
@@ -42,7 +42,7 @@ export default class Lock extends Command {
         type: 2,
         date: new Date(),
         expiration: {
-          expirationDate: momentMilliseconds ? expiry : null,
+          date: momentMilliseconds ? expiry : null,
           processed,
         },
       });