diff --git a/src/module/numberLabel.js b/src/module/numberLabel.js
index 88bfc36..089e1d0 100644
--- a/src/module/numberLabel.js
+++ b/src/module/numberLabel.js
@@ -13,7 +13,7 @@
  */
 const formatNumberWithCommas = (numberStr) => {
   let reversedStr = numberStr.split("").reverse().join("");
-  let groupedStr = reversedStr.match(/.{1,3}/g);
+  let groupedStr = reversedStr.match(/.{1,3}/g) || [];
   let joinedStr = groupedStr.join(",");
   let finalStr = joinedStr.split("").reverse().join("");