diff --git a/src/js/utilsDOM.js b/src/js/utilsDOM.js
index e087b7c3730b08681221f1ee14bd496366acd918..046f0bc7fe64d1b12e6b38f6c50de600e9700365 100644
--- a/src/js/utilsDOM.js
+++ b/src/js/utilsDOM.js
@@ -271,7 +271,7 @@ App.UI.DOM.arrayToList = function(content, delimiter = ", ", lastDelimiter = " a
 	if (content.length === 0) {
 		return "none";
 	}
-	if (this.length === 1) {
+	if (content.length === 1) {
 		return content[0];
 	}
 	const fragment = document.createDocumentFragment();