diff --git a/lib/util.js b/lib/util.js
index f9e4239..f5bcca0 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -57,14 +57,14 @@ exports.formatTimestampToDate = function(timestamp) {
 };
 
 exports.formatMs = function(ms) {
-  const seconds = Math.floor((ms / 1000) % 60);
-  const minutes = Math.floor((ms / (1000 * 60)) % 60);
-  const hours = Math.floor((ms / (1000 * 60 * 24)) % 60);
-  let formattedTime = '';
+  const seconds = Math.floor(ms / 1000) % 60;
+  const minutes = Math.floor(ms / (1000 * 60)) % 60;
+  const hours = Math.floor(ms / (1000 * 60 * 60));
+  const formattedTime = [];
 
-  if (hours) formattedTime += hours.toString(10).padStart(2, '0') + 'hrs, ';
-  if (minutes) formattedTime += minutes.toString(10).padStart(2, '0') + ' min, ';
-  if (seconds) formattedTime += seconds.toString(10).padStart(2, '0') + ' sec';
+  if (hours) formattedTime.push(hours.toString(10).padStart(2, '0')) + ' hrs';
+  if (minutes) formattedTime.push(minutes.toString(10).padStart(2, '0')) + ' min';
+  if (seconds) formattedTime.push(seconds.toString(10).padStart(2, '0')) + ' sec';
 
-  return formattedTime;
+  return formattedTime.join(', ');
 };