diff --git a/ui/viewers/pdfjs/web/viewer.html b/ui/viewers/pdfjs/web/viewer.html
index 49e1c3a1a..a282edb27 100644
--- a/ui/viewers/pdfjs/web/viewer.html
+++ b/ui/viewers/pdfjs/web/viewer.html
@@ -34,7 +34,7 @@
 
 <!-- This snippet is used in production (included from viewer.html) -->
 <link rel="resource" type="application/l10n" href="locale/locale.properties">
-<script src="pdf.viewer.js"></script>
+<script src="pdf.viewer.js" nonce="dummy"></script>
 
 
   </head>