diff --git a/chrome/content/zotero/xpcom/itemTreeManager.js b/chrome/content/zotero/xpcom/itemTreeManager.js
index 11dd5d86d6..ce38f8c48a 100644
--- a/chrome/content/zotero/xpcom/itemTreeManager.js
+++ b/chrome/content/zotero/xpcom/itemTreeManager.js
@@ -133,7 +133,7 @@ class ItemTreeManager {
 	 * @returns {boolean} true if the column(s) are unregistered
 	 * @example
 	 * ```js
-	 * Zotero.ItemTreeManager.unregisterColumns('rtitle');
+	 * Zotero.ItemTreeManager.unregisterColumns(registeredDataKey);
 	 * ```
 	 */
 	async unregisterColumns(dataKeys) {