diff --git a/manifests/params.pp b/manifests/params.pp
index f2c742f..325cd73 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -259,7 +259,7 @@ $ng_use_auth          = '1',
 $ng_use_ssl_auth      = '0',
 $ng_enable_def_user   = false,
 $ng_def_user_name     = 'nagios_insecure',
-$ng_nagios_admin      = 'nagios_sec_adm',
+$ng_nagios_admin      = ['nagios_sec_adm'],
 $ng_sysinfo_auth      = '',
 $ng_confinfo_auth     = '',
 $ng_command_auth      = '',