diff --git a/include/functions.php b/include/functions.php
index 306014d96..018520648 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -3450,6 +3450,8 @@
 
 	function format_article_labels($labels, $id) {
 
+		if (is_array($labels)) return '';
+
 		$labels_str = "";
 
 		foreach ($labels as $l) {