diff --git a/manifests/init.pp b/manifests/init.pp
index 9429e33..c1aca94 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -55,7 +55,7 @@
   $network_time_server  = undef,
   $computer_sleep_mins  = undef,
   $display_sleep_mins   = undef,
-  $hardddisk_sleep_mins = undef
+  $harddisk_sleep_mins = undef
 ){
   # Remote login
   if $remote_login {