diff --git a/asciinema/compose.yaml b/asciinema/compose.yaml
index 9e2135f..22490a9 100644
--- a/asciinema/compose.yaml
+++ b/asciinema/compose.yaml
@@ -18,7 +18,7 @@ services:
       SMTP_PORT: ${EMAIL_SMTP_PORT}
       SMTP_USERNAME: ${EMAIL_SMTP_USER}
       SMTP_PASSWORD: ${EMAIL_SMTP_PASSWORD}
-      SMTP_TLS: :never
+      SMTP_TLS: never
       SMTP_SSL: true
       SMTP_AUTH: always
       MAIL_FROM_ADDRESS: ${EMAIL_FROM}