diff --git a/SETUP.md b/SETUP.md
index 44283e1..ba12b86 100644
--- a/SETUP.md
+++ b/SETUP.md
@@ -9,7 +9,7 @@ One mailer instance handles **multiple BTCPay stores** on the same server (`paym
 1. Copy **Server API token** → `POSTMARK_API_KEY`
 2. Verify sender → `FROM_EMAIL` (e.g. `noreply@nxtgroup.org`)
 3. Optional display name → `FROM_NAME` (e.g. `NXT Payments` → sends as `NXT Payments <noreply@nxtgroup.org>`)
-3. Set `BCC_EMAIL` (comma-separated, optional)
+4. Set `BCC_EMAIL` (comma-separated, optional)
 
 ## 2. BTCPay API key (all stores)