diff --git a/src/js/script.js b/src/js/script.js
index e6f4b51d9..ebe5cf1a3 100644
--- a/src/js/script.js
+++ b/src/js/script.js
@@ -337,7 +337,7 @@ async function activateFunbox(funbox, mode) {
       restartTest();
     }
 
-    if (funbox === "read_ahead") {
+    if (funbox === "read_ahead" || funbox === "read_ahead_easy") {
       setHighlightMode("letter", true);
       restartTest();
     }