diff --git a/resources/ArkhamDBExport.js b/resources/ArkhamDBExport.js
index 8792f3d..f0a2535 100644
--- a/resources/ArkhamDBExport.js
+++ b/resources/ArkhamDBExport.js
@@ -100,10 +100,6 @@ function int_or_null(inp) {
   }
 }
 
-function leftPad(str, len, fill) {
-  return fill.repeat(Math.max(len - str.length, 0)) + str;
-}
-
 function replaceAll(str, search, replace) {
   return str.split(search).join(replace);
 }
@@ -122,7 +118,7 @@ function build_card(component, pack_code, cycle_prefix, copies) {
   }
 
   function common_data() {
-    const code = cycle_prefix + leftPad(String(component.settings.get('CollectionNumber')), 3, '0');
+    const code = cycle_prefix + String(component.settings.get('CollectionNumber')).padStart(3, '0');
 
     return {
       name: substitute_tags(String(component.getName())),