diff --git a/src/bundle/Command/MigrateLegacyMatrixCommand.php b/src/bundle/Command/MigrateLegacyMatrixCommand.php
index 4f28a65..1e41fa6 100644
--- a/src/bundle/Command/MigrateLegacyMatrixCommand.php
+++ b/src/bundle/Command/MigrateLegacyMatrixCommand.php
@@ -247,7 +247,7 @@ private function getContentClassAttributes(): array
                 'class.identifier as contenttype_identifier',
             ])
             ->from(ContentTypeGateway::FIELD_DEFINITION_TABLE, 'attr')
-            ->join('attr', ContentTypeGateway::CONTENT_TYPE_TABLE, 'class', 'class.id = attr.contentclass_id')
+            ->join('attr', ContentTypeGateway::CONTENT_TYPE_TABLE, 'class', 'class.id = attr.content_type_id')
             ->where('attr.data_type_string = :identifier')
             ->setParameter('identifier', self::EZMATRIX_IDENTIFIER);