1 files changed, 4 insertions, 0 deletions
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index cdcfb7ad..be43ecf6 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -39,6 +39,8 @@ class Backend {
             url: window.location.href
         };
 
+        this.isPrepared = false;
+
         this.clipboardPasteTarget = document.querySelector('#clipboard-paste-target');
 
         this.popupWindow = null;
@@ -108,6 +110,8 @@ class Backend {
         }
         chrome.runtime.onMessage.addListener(this.onMessage.bind(this));
 
+        this.isPrepared = true;
+
         const options = this.getOptions(this.optionsContext);
         if (options.general.showGuide) {
             chrome.tabs.create({url: chrome.runtime.getURL('/bg/guide.html')});