diff --git a/sudo/manifests/init.pp b/sudo/manifests/init.pp
index 0118199..6b21b1f 100644
--- a/sudo/manifests/init.pp
+++ b/sudo/manifests/init.pp
@@ -41,8 +41,8 @@ class sudo {
 #
 # === Parameters
 #
-#   $name:
-#       User or group. Prefix group name with %.
+#   $who:
+#       User or group. Prefix group name with %. Defaults to $name.
 #   $where:
 #       Defaults to ALL.
 #   $as_whom:
@@ -50,9 +50,22 @@ class sudo {
 #   $what:
 #       Defaults to ALL.
 #
-define sudo::sudoer($where="ALL", $as_whom="ALL", $what="ALL") {
+define sudo::sudoer(
+    $who=undef,
+    $where="ALL",
+    $as_whom="ALL",
+    $what="ALL"
+) {
 
-    file { "/etc/sudoers.d/${name}":
+    if ! $who {
+        $who_real = $name
+    } else {
+        $who_real = $who
+    }
+
+    $name_real = regsubst($name, '%', '_')
+
+    file { "/etc/sudoers.d/${name_real}":
         ensure  => present,
         mode    => "0440",
         owner   => "root",
@@ -60,7 +73,7 @@ define sudo::sudoer($where="ALL", $as_whom="ALL", $what="ALL") {
             "openbsd" => "wheel",
             default   => "root",
         },
-        content => "${name}\t${where}=(${as_whom})\t${what}\n",
+        content => "${who_real}\t${where}=(${as_whom})\t${what}\n",
         require => File["/etc/sudoers"],
     }