diff --git a/index.js b/index.js
index 0e36cd7..6435ca5 100644
--- a/index.js
+++ b/index.js
@@ -29,11 +29,11 @@
   });
 
   // part 2
-  const handleMouseEnter = function(event) {
+  const handleMouseEnter = (event) => {
     console.log(`Entered ${event.target.textContent} button`);
   };
 
-  const handleMouseLeave = function(event) {
+  const handleMouseLeave = (event) => {
     console.log(`Left ${event.target.textContent} button`);
   };