diff --git a/app/services/label_templates_preview_service.rb b/app/services/label_templates_preview_service.rb
index f253eff78..c2f09f6a9 100644
--- a/app/services/label_templates_preview_service.rb
+++ b/app/services/label_templates_preview_service.rb
@@ -17,7 +17,7 @@ class LabelTemplatesPreviewService
       invocation_type: 'RequestResponse',
       log_type: 'Tail',
       payload:
-        "{ \"content\": #{sanitize_zpl_code(@params[:zpl]).to_json},"\
+        "{ \"content\": #{@params[:zpl].to_json},"\
         "\"width\": #{@params[:width]},"\
         "\"height\": #{@params[:height]},"\
         "\"density\": #{@params[:density]} "\
@@ -35,10 +35,4 @@ class LabelTemplatesPreviewService
       end
     end
   end
-
-  private
-
-  def sanitize_zpl_code(zpl_code)
-    zpl_code.gsub('_', '_5F')
-  end
 end