diff --git a/cps/static/js/main.js b/cps/static/js/main.js
index 55ea42b3..04b00712 100644
--- a/cps/static/js/main.js
+++ b/cps/static/js/main.js
@@ -121,15 +121,15 @@ $(function() {
         });
     });
 
-    $('#bookDetailsModal')
-      .on('show.bs.modal', function(e) {
-        var $modalBody = $(this).find('.modal-body');
+    $("#bookDetailsModal")
+      .on("show.bs.modal", function(e) {
+        var $modalBody = $(this).find(".modal-body");
         $.get(e.relatedTarget.href).done(function(content) {
           $modalBody.html(content);
         });
       })
-      .on('hidden.bs.modal', function() {
-        $(this).find('.modal-body').html('...');
+      .on("hidden.bs.modal", function() {
+        $(this).find(".modal-body").html("...");
       });
 
     $(window).resize(function(event) {
diff --git a/cps/web.py b/cps/web.py
index 9d73b173..ba7d92fc 100755
--- a/cps/web.py
+++ b/cps/web.py
@@ -412,8 +412,8 @@ def timestamptodate(date, fmt=None):
 
 
 @app.template_filter('yesno')
-def yesno(str, yes, no):
-    return yes if str else no
+def yesno(value, yes, no):
+    return yes if value else no
 
 
 def admin_required(f):