diff --git a/js/functions.js b/js/functions.js
index 03087d9084..07ae5ecf0b 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -4510,6 +4510,7 @@ Functions.createPrintAndBackButtons = function () {
     var backButton = $('<input>',{
         type: 'button',
         value: Messages.back,
+        class: 'btn btn-secondary',
         id: 'back_button_print_view'
     });
     backButton.on('click', Functions.removePrintAndBackButton);
@@ -4517,6 +4518,7 @@ Functions.createPrintAndBackButtons = function () {
     var printButton = $('<input>',{
         type: 'button',
         value: Messages.print,
+        class: 'btn btn-primary',
         id: 'print_button_print_view'
     });
     printButton.on('click', Functions.printPage);