diff --git a/EventListener/ImportSubscriber.php b/EventListener/ImportSubscriber.php
index 98fba5826..e98ccffb3 100644
--- a/EventListener/ImportSubscriber.php
+++ b/EventListener/ImportSubscriber.php
@@ -228,7 +228,7 @@ private function handleValidateRequired(Form $form, int $customObjectId, array $
         $requiredFields = $this->customFieldRepository->getRequiredCustomFieldsForCustomObject($customObjectId);
 
         $missingRequiredFields = $requiredFields->filter(function (CustomField $customField) use ($matchedFields) {
-            return !array_key_exists($customField->getAlias(), $matchedFields);
+            return !array_key_exists($customField->getId(), array_flip($matchedFields));
         })->map(function (CustomField $customField) {
             return "{$customField->getLabel()} ({$customField->getAlias()})";
         });