diff --git a/deploy/vagrant/Vagrantfile b/deploy/vagrant/Vagrantfile
index 8a9f40e..63e5b67 100644
--- a/deploy/vagrant/Vagrantfile
+++ b/deploy/vagrant/Vagrantfile
@@ -1,9 +1,15 @@
 ENV['VAGRANT_NO_PARALLEL'] = 'yes'
 
-# Returns true if `GUI` environment variable is set to a non-empty value.
+# Returns true if `GUI` environment variable exists, value does not matter.
 # Defaults to false
 def worker_gui_enabled?
-  ENV.fetch('VAGRANT_WORKER_GUI', '').empty?
+  ENV.include?('VAGRANT_WORKER_GUI')
+end
+
+# Returns true if `SCALE` environment variable exists, value does not matter.
+# Defaults to false
+def worker_display_scale_enabled?
+  ENV.include?('VAGRANT_WORKER_SCALE')
 end
 
 Vagrant.configure('2') do |config|
@@ -57,6 +63,10 @@ Vagrant.configure('2') do |config|
       vb.memory = 4*1024
       vb.cpus = 1
       vb.gui = worker_gui_enabled?
+      vb.customize [
+        'setextradata', :id,
+        'GUI/ScaleFactor', '3.0'
+      ] if worker_display_scale_enabled?
       vb.customize [
         'modifyvm', :id,
         '--nic1', 'none',
diff --git a/test/_vagrant/vagrant_test.go b/test/_vagrant/vagrant_test.go
index 7d6b0c5..97fa130 100644
--- a/test/_vagrant/vagrant_test.go
+++ b/test/_vagrant/vagrant_test.go
@@ -95,7 +95,6 @@ func TestVagrantSetupGuide(t *testing.T) {
 
 	t.Logf("WorkflowID: %s", workflowID)
 
-	os.Setenv("VAGRANT_WORKER_GUI", "false")
 	worker, err := vagrant.Up(ctx,
 		vagrant.WithLogger(t.Logf),
 		vagrant.WithMachineName("worker"),