diff --git a/app/models/miq_provision_virt_workflow.rb b/app/models/miq_provision_virt_workflow.rb
index f61f9460ce4..ae9643595e1 100644
--- a/app/models/miq_provision_virt_workflow.rb
+++ b/app/models/miq_provision_virt_workflow.rb
@@ -155,7 +155,7 @@ def set_on_vm_id_changed
         f[:notes] = vm_description
       when :vlan
         get_field(:vlan)
-        vlan ||= @values[fn].first
+        vlan ||= Array(@values[fn]).first
         set_value_from_list(fn, f, vlan, allowed_vlans)
       end
     end