diff --git a/functions/api/reports/submit.ts b/functions/api/reports/submit.ts
index a6bece5..2da683e 100644
--- a/functions/api/reports/submit.ts
+++ b/functions/api/reports/submit.ts
@@ -78,7 +78,8 @@ export async function onRequestPost(context: RequestContext) {
     if (
       username.length < 3 ||
       username.length > 20 ||
-      username.match(/_/g)?.length > 1 ||
+      (username.match(/_/g)?.length > 1 &&
+        !username.match(/roblox_user_\d+/)) || // New reset username format, the only exception to the underscore rule
       username.match(/\W/)
     )
       return jsonError(`Username "${username}" is invalid`, 400);