diff --git a/zephyr/static/js/hotkey.js b/zephyr/static/js/hotkey.js
index 259ba90623..20b33f1011 100644
--- a/zephyr/static/js/hotkey.js
+++ b/zephyr/static/js/hotkey.js
@@ -156,29 +156,29 @@ exports.set_compose = function () {
    so we bail in .keydown if the event is a letter or number and
    instead just let keypress go for it. */
 
-function down_or_press(event) {
-    var result = current_key_handler(event);
+function down_or_press(e) {
+    var result = current_key_handler(e);
     if (result) {
         current_key_handler = result;
-        event.preventDefault();
+        e.preventDefault();
     }
 }
 
-$(document).keydown(function (event) {
+$(document).keydown(function (e) {
     // Restrict to non-alphanumeric keys
-    if (48 > event.which || 90 < event.which)
-        down_or_press(event);
+    if (48 > e.which || 90 < e.which)
+        down_or_press(e);
 });
 
-$(document).keypress(function (event) {
+$(document).keypress(function (e) {
     // What exactly triggers .keypress may vary by browser.
     // Welcome to compatability hell.
     //
     // In particular, when you press tab in Firefox, it fires a
     // keypress event with keycode 0 after processing the original
     // event.
-    if (event.which !== 0 && event.charCode !== 0)
-        down_or_press(event);
+    if (e.which !== 0 && e.charCode !== 0)
+        down_or_press(e);
 });
 
 return exports;