diff --git a/chrome/content/zotero/xpcom/reader.js b/chrome/content/zotero/xpcom/reader.js
index ae716cd0e4..da9666e259 100644
--- a/chrome/content/zotero/xpcom/reader.js
+++ b/chrome/content/zotero/xpcom/reader.js
@@ -1081,6 +1081,7 @@ class ReaderWindow extends ReaderInstance {
 	};
 
 	close() {
+		this.uninit();
 		this._window.close();
 		this._onClose();
 	}