diff --git a/src/background.js b/src/background.js
index ce9c081c..3ae696f6 100644
--- a/src/background.js
+++ b/src/background.js
@@ -215,7 +215,9 @@ async function copyToClipboard(text, clear = true) {
 }
 
 /**
+ * returns true if agent string is Chrome / Chromium
  *
+ * @since 3.10.0
  */
 function isChrome() {
     const ua = navigator.userAgent;