diff --git a/static/scripts/app/router.js b/static/scripts/app/router.js
index 2baf222570..76ad2fcdf1 100644
--- a/static/scripts/app/router.js
+++ b/static/scripts/app/router.js
@@ -133,7 +133,7 @@ define([
                     if (this.currentView == this.dirView) {
                         if ($('#upload-file-dialog').is(':visible') &&
                             $('#upload-file-dialog .status').text() == window.fileuploading) {
-                            if (!window.confirm('A file is being uploaded. Are you sure you want to leave this page?')) {
+                            if (!window.confirm(gettext('A file is being uploaded. Are you sure you want to leave this page?'))) {
                                 return false;
                             }
                         }