diff --git a/app/models/concerns/foreman_vmware_advanced/vmware_extensions.rb b/app/models/concerns/foreman_vmware_advanced/vmware_extensions.rb
index 5c1cbb2810de33164a3428b00d9a3a92a3e49a57..c045f2722adbb5f8f72853517d482ba7ac810e62 100644
--- a/app/models/concerns/foreman_vmware_advanced/vmware_extensions.rb
+++ b/app/models/concerns/foreman_vmware_advanced/vmware_extensions.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ForemanVmwareAdvanced
   module VmwareExtensions
     def parse_args(inp_args)