diff --git a/docs/sending/start-submission.mdx b/docs/sending/start-submission.mdx
index ba362814c989f807c18e0fecb31b3a2a257551a2..392ae0390fb60ab92680c879a384fb122b858653 100644
--- a/docs/sending/start-submission.mdx
+++ b/docs/sending/start-submission.mdx
@@ -65,7 +65,7 @@ const DESTINATION_ID = "f7e70568-1fbc-476e-b1fa-a691ef205c7d"
 const TOKEN = "eyJraWQfaWQiOiJiMj...ZPWT1NtPaYZ8YWHXh1TWcb2uhLVVnDBQ"
 const SUBMISSION_API = "https://submission-api-testing.fit-connect.fitko.dev"
 
-var data = JSON.stringify({
+const data = JSON.stringify({
   "destinationId": DESTINATION_ID,
   "announcedAttachments": [
     "12399641-2067-4e8b-b049-91b2a6c90544"