diff --git a/Code.ts b/Code.ts
index 2dcc90d..73f83d9 100644
--- a/Code.ts
+++ b/Code.ts
@@ -36,8 +36,8 @@ function copyBody(
   dest: GoogleAppsScript.Document.Body,
   index?: number
 ) {
-  var totalElements = source.getNumChildren();
-  for (var j = 0; j < totalElements; ++j) {
+  const totalElements = source.getNumChildren();
+  for (let j = 0; j < totalElements; ++j) {
     if (index) copyElement(source.getChild(j), dest, index + j);
     else copyElement(source.getChild(j), dest);
   }