diff --git a/app/models/task.rb b/app/models/task.rb
index d40ff2933..f174a426a 100644
--- a/app/models/task.rb
+++ b/app/models/task.rb
@@ -1149,7 +1149,7 @@ def convert_submission_to_pdf(source_folder: FileHelper.student_work_dir(:new),
     rescue => e
       clear_in_process
       trigger_transition trigger: 'fix', by_user: project.tutor_for(task_definition)
-      add_text_comment project.tutor_for(task_definition), "**Automated Comment**: Something went wrong with your submission. Check the files and resubmit this task. #{e.message.to_s}"
+      add_text_comment project.tutor_for(task_definition), "**Automated Comment**: Something went wrong with your submission. Check the files and resubmit this task. #{e.message}"
       raise e
     end
   end