diff --git a/ui/nuxeo-document-thumbnail/nuxeo-document-thumbnail.js b/ui/nuxeo-document-thumbnail/nuxeo-document-thumbnail.js
index 6dced83ec2..23d4e9d9b5 100644
--- a/ui/nuxeo-document-thumbnail/nuxeo-document-thumbnail.js
+++ b/ui/nuxeo-document-thumbnail/nuxeo-document-thumbnail.js
@@ -75,13 +75,18 @@ import { I18nBehavior } from '../nuxeo-i18n-behavior';
     }
 
     _thumbnail(doc) {
-      return doc &&
+      if (
+        doc &&
         doc.uid &&
         doc.contextParameters &&
         doc.contextParameters.thumbnail &&
         doc.contextParameters.thumbnail.url
-        ? doc.contextParameters.thumbnail.url
-        : '';
+      ) {
+        const splitter = doc.contextParameters.thumbnail.url.indexOf('?') > -1 ? '&' : '?';
+        doc.contextParameters.thumbnail.url = `${doc.contextParameters.thumbnail.url}${splitter}clientReason=view`;
+        return doc.contextParameters.thumbnail.url;
+      }
+      return '';
     }
 
     _error() {