diff --git a/monitoring/icinga2/conf.d/hosts.conf b/monitoring/icinga2/conf.d/hosts.conf
index 0118f03..e7aa6ba 100644
--- a/monitoring/icinga2/conf.d/hosts.conf
+++ b/monitoring/icinga2/conf.d/hosts.conf
@@ -48,5 +48,9 @@ object Host NodeName {
     /* The UserGroup `icingaadmins` is defined in `users.conf`. */
     groups = [ "icingaadmins" ]
   }
+
+  vars.notification["slack"] = {
+	groups = [ "icingaadmins"]
+  }
 }