diff --git a/tmpl/alertmanager.yml b/tmpl/alertmanager.yml
index d459e63..396d081 100644
--- a/tmpl/alertmanager.yml
+++ b/tmpl/alertmanager.yml
@@ -4,11 +4,11 @@ global:
   %if %%tls_smtp == "non"
   smtp_smarthost: '%%exim_relay_smtp:25'
   %elif %%tls_smtp == "port 25"
-    smtp_smarthost: '%%exim_relay_smtp:25'
-    smtp_require_tls: true
-    %else
-    smtp_smarthost: '%%exim_relay_smtp:465'
-    smtp_require_tls: true
+  smtp_smarthost: '%%exim_relay_smtp:25'
+  smtp_require_tls: true
+  %else
+  smtp_smarthost: '%%exim_relay_smtp:465'
+  smtp_require_tls: true
   %end if
   smtp_from: '%%system_mail_from'
 %else