diff --git a/modules/invoiceOut/back/methods/invoiceOut/download.js b/modules/invoiceOut/back/methods/invoiceOut/download.js
index f1138dd51..19dea5b1a 100644
--- a/modules/invoiceOut/back/methods/invoiceOut/download.js
+++ b/modules/invoiceOut/back/methods/invoiceOut/download.js
@@ -9,7 +9,7 @@ module.exports = Self => {
         accepts: [
             {
                 arg: 'id',
-                type: 'String',
+                type: 'string',
                 description: 'The invoice id',
                 http: {source: 'path'}
             }
@@ -21,16 +21,16 @@ module.exports = Self => {
                 root: true
             }, {
                 arg: 'Content-Type',
-                type: 'String',
+                type: 'string',
                 http: {target: 'header'}
             }, {
                 arg: 'Content-Disposition',
-                type: 'String',
+                type: 'string',
                 http: {target: 'header'}
             }
         ],
         http: {
-            path: `/:id/download`,
+            path: '/:id/download',
             verb: 'GET'
         }
     });