diff --git a/global-templates/host-templates.conf b/global-templates/host-templates.conf
index c199820..8de3906 100644
--- a/global-templates/host-templates.conf
+++ b/global-templates/host-templates.conf
@@ -36,11 +36,9 @@ template Host "debian-host" {
 }
 
 template Host "postfix-host" {
-  vars.procs = {
-    "postfix" = {
-      procs_command = "master"
-      procs_argument = "postfix"
-      procs_critical = "1:2"
-    }
+  vars.procs["postfix"] = {
+    procs_command = "master"
+    procs_argument = "postfix"
+    procs_critical = "1:2"
   }
 }