diff --git a/content.js b/content.js
index 5521923..7527a70 100644
--- a/content.js
+++ b/content.js
@@ -1,3 +1,5 @@
+if (!document.body) return;
+
 const observer = new MutationObserver(() => {
   const overlay = document.querySelector('.payok__wrap');
   if (!overlay) return;