diff --git a/install_postfix_advanced.sh b/install_postfix_advanced.sh
index f1f3ed4..0971700 100755
--- a/install_postfix_advanced.sh
+++ b/install_postfix_advanced.sh
@@ -833,7 +833,7 @@ if $IS_RELAY_HOST ; then
    cat <<EOF >> /etc/postfix/main.cf
 
 #======= SASL Authentification  ============
-smtpd_sasl_auth_enable = \$SASL_AUTH_ENABLED
+smtpd_sasl_auth_enable = $SASL_AUTH_ENABLED
 smtpd_sasl_type = cyrus
 smtpd_sasl_path = smtpd