diff --git a/js/viewer/viewer.js b/js/viewer/viewer.js
index c83de104..8573e4e3 100644
--- a/js/viewer/viewer.js
+++ b/js/viewer/viewer.js
@@ -63,7 +63,7 @@ var odfViewer = {
 			//Public page, files app, etc
 			var dirName = $('#dir').val()!='/' ? $('#dir').val() + '/' : '/';
 			var location = OC.filePath('documents', 'ajax', 'download.php') + '?path=' + encodeURIComponent(dirName) + encodeURIComponent(filename)
-			 + '&requesttoken=' + oc_requesttoken;
+			 + '&requesttoken=' + encodeURIComponent(oc_requesttoken);
 			OC.addStyle('documents', '3rdparty/webodf/editor');
 		}