diff --git a/main.js b/main.js
index 09bfcf7..225d3d2 100644
--- a/main.js
+++ b/main.js
@@ -11,6 +11,7 @@ clipboard.on('success', function (e) {
     });
 });
 
+//Set default validity
 chrome.tabs.query({ active: true, lastFocusedWindow: true }, tabs => {
     document.getElementById("target").value = tabs[0].url;
 });