diff --git a/puppet/zulip/manifests/common.pp b/puppet/zulip/manifests/common.pp
index c86188ca51..8663edcb50 100644
--- a/puppet/zulip/manifests/common.pp
+++ b/puppet/zulip/manifests/common.pp
@@ -33,7 +33,7 @@ class zulip::common {
 
   $total_memory_mb = Integer($::memorysize_mb)
 
-  $goarch = $::architecture ? {
+  $goarch = $::os['architecture'] ? {
     'amd64'   => 'amd64',
     'aarch64' => 'arm64',
   }
diff --git a/puppet/zulip/manifests/external_dep.pp b/puppet/zulip/manifests/external_dep.pp
index e8020f38e7..8056e4c2aa 100644
--- a/puppet/zulip/manifests/external_dep.pp
+++ b/puppet/zulip/manifests/external_dep.pp
@@ -6,9 +6,9 @@ define zulip::external_dep(
 ) {
   if $sha256 == '' {
     if $zulip::common::versions[$title]['sha256'] =~ Hash {
-      $sha256_filled = $zulip::common::versions[$title]['sha256'][$::architecture]
+      $sha256_filled = $zulip::common::versions[$title]['sha256'][$::os['architecture']]
       if $sha256_filled == undef {
-        err("No sha256 found for ${title} for architecture ${::architecture}")
+        err("No sha256 found for ${title} for architecture ${::os['architecture']}")
         fail()
       }
     } else {