diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/includes/opac-bottom.inc b/koha-tmpl/opac-tmpl/bootstrap/en/includes/opac-bottom.inc
index f4c35c2eb4..0220d26a9f 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/includes/opac-bottom.inc
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/includes/opac-bottom.inc
@@ -170,6 +170,7 @@ $.widget.bridge('uitooltip', $.ui.tooltip);
     <script type="text/javascript">
     //<![CDATA[
     var NO_OL_JACKET = _("No cover image available");
+    var OL_PREVIEW = _("Preview");
     //]]>
     </script>
 [% END %]
diff --git a/koha-tmpl/opac-tmpl/bootstrap/js/openlibrary.js b/koha-tmpl/opac-tmpl/bootstrap/js/openlibrary.js
index 9142273b96..995cb6b5dc 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/js/openlibrary.js
+++ b/koha-tmpl/opac-tmpl/bootstrap/js/openlibrary.js
@@ -49,7 +49,7 @@ KOHA.OpenLibrary = {
                     if (is_opacdetail) {
                         img.src = book.cover.medium;
                         $(this).empty().append(img);
-                        $(this).append('<div class="results_summary">' + '<a href="' + book.url + '">Preview</a></div>');
+                        $(this).append('<div class="results_summary">' + '<a href="' + book.url + '">' + OL_PREVIEW + '</a></div>');
                     } else {
                         img.src = book.cover.medium;
                         img.height = '110';