diff --git a/manifests/sysctl.pp b/manifests/sysctl.pp
index 84f0d13..741f9ad 100644
--- a/manifests/sysctl.pp
+++ b/manifests/sysctl.pp
@@ -30,7 +30,7 @@
 ) {
 
   # set variables
-  if $::architecture == 'amd64' or $::architecture == 'x86_64' {
+  if $facts['os']['architecture'] == 'amd64' or $facts['os']['architecture'] == 'x86_64' {
     $x86_64 = true
   } else {
     $x86_64 = false