diff --git a/week-09/event1/index.html b/week-09/event1/index.html
index f2eec13..9642813 100644
--- a/week-09/event1/index.html
+++ b/week-09/event1/index.html
@@ -29,9 +29,15 @@
     <button class="off">Machine is off</button>
 
   <script>
-    const btn = document.querySelector('.off');
+    let btn = document.querySelector('button')
 
-    // Add your code here
+    btn.addEventListener('click', function() {
+      if (btn.innerText === "Machine is off") {
+        btn.innerText = "Machine is on";
+      } else {
+        btn.innerText = "Machine is off";
+      }
+    })
 
   </script>