diff --git a/templates/compose/plausible.yaml b/templates/compose/plausible.yaml
index e73421d57..14a80ad3f 100644
--- a/templates/compose/plausible.yaml
+++ b/templates/compose/plausible.yaml
@@ -12,7 +12,7 @@ services:
       - "DATABASE_URL=postgres://postgres:$SERVICE_PASSWORD_POSTGRES@plausible_db/plausible"
       - BASE_URL=$SERVICE_FQDN_PLAUSIBLE
       - SECRET_KEY_BASE=$SERVICE_BASE64_64_PLAUSIBLE
-      - TOTP_VAULT_KEY=$SERVICE_BASE64_TOTP
+      - TOTP_VAULT_KEY=$SERVICE_REALBASE64_32_TOTP
     depends_on:
       - plausible_db
       - plausible_events_db