diff --git a/app/models/manageiq/providers/embedded_terraform/automation_manager/job.rb b/app/models/manageiq/providers/embedded_terraform/automation_manager/job.rb
index bf4ee903..e90e2798 100644
--- a/app/models/manageiq/providers/embedded_terraform/automation_manager/job.rb
+++ b/app/models/manageiq/providers/embedded_terraform/automation_manager/job.rb
@@ -125,7 +125,7 @@ def stack_response
   end
 
   def decrypt_vars(input_vars)
-    input_vars.transform_values! { |val| val.kind_of?(String) ? ManageIQ::Password.try_decrypt(val) : val }
+    input_vars.transform_values { |val| val.kind_of?(String) ? ManageIQ::Password.try_decrypt(val) : val }
   end
 
   def configuration_script_source