diff --git a/lib/AttributeCheck.php b/lib/AttributeCheck.php
index c7649a9efe85cb0373c4603db308e7b8bc52097d..13d3032e9b538bf338d73f9ed157f03eafcde51d 100644
--- a/lib/AttributeCheck.php
+++ b/lib/AttributeCheck.php
@@ -69,7 +69,7 @@ class AttributeCheck
                     }
                 } elseif (is_array($item)) {
                     foreach ($item as $listItem) {
-                        if (! array_key_exists($item, $attributes)) {
+                        if (! array_key_exists($listItem, $attributes)) {
                             return self::NOT_OK;
                         }
                     }