diff --git a/js/solution1.js b/js/solution1.js
index 6943bc9..23f02bf 100644
--- a/js/solution1.js
+++ b/js/solution1.js
@@ -1,9 +1,8 @@
 function tenToBin(x) {
   const l = [];
-  let i = x;
-  while (i !== 0) {
-    l.push(i % 2);
-    i = Math.trunc(i / 2);
+  while (x !== 0) {
+    l.push(x % 2);
+    x = Math.trunc(x / 2);
   }
   return l;
 }