diff --git a/chrome/content/zotero/elements/itemBox.js b/chrome/content/zotero/elements/itemBox.js
index e209024444..562c30f967 100644
--- a/chrome/content/zotero/elements/itemBox.js
+++ b/chrome/content/zotero/elements/itemBox.js
@@ -51,6 +51,7 @@
 			this._draggedCreator = false;
 			this._selectField = null;
 			this._selectFieldSelection = null;
+			this._addCreatorRow = false;
 		}
 
 		get content() {