diff --git a/simple-translate/popup/popup.js b/simple-translate/popup/popup.js
index 6583cea..7d41d58 100644
--- a/simple-translate/popup/popup.js
+++ b/simple-translate/popup/popup.js
@@ -56,12 +56,6 @@ function alphabeticallySort(a, b) {
     }
 }
 
-/*
-//Firefoxの仕様上popup.htmlでfocusが効かないため使えない
-textarea.focus();
-document.execCommand("paste");
-*/
-
 //翻訳先言語変更時に更新
 function changeLang() {
     targetLang = langList.value;