diff --git a/website/src/repl/Repl.jsx b/website/src/repl/Repl.jsx
index ce480701..c30e7663 100644
--- a/website/src/repl/Repl.jsx
+++ b/website/src/repl/Repl.jsx
@@ -157,7 +157,7 @@ export function Repl({ embedded = false }) {
             e.preventDefault();
             flash(view);
             await activateCode();
-          } else if (e.key === '.' || e.keyCode === 'Period') {
+          } else if (e.key === '.' || e.code === 'Period') {
             stop();
             e.preventDefault();
           }