diff --git a/content.js b/content.js
index c8f3752..5521923 100644
--- a/content.js
+++ b/content.js
@@ -6,6 +6,7 @@ const observer = new MutationObserver(() => {
   const submitBtn = overlay.querySelector('button.payok__submit');
   if (!freeRadio || !submitBtn) return;
 
+  observer.disconnect();
   freeRadio.click();
   setTimeout(() => submitBtn.click(), 100);
 });