diff --git a/engine/Shopware/Components/Model/Generator.php b/engine/Shopware/Components/Model/Generator.php
index 84a25d58832..2c0be9668fe 100644
--- a/engine/Shopware/Components/Model/Generator.php
+++ b/engine/Shopware/Components/Model/Generator.php
@@ -780,7 +780,11 @@ protected function getConstructor($table)
         // Create the property initializations
         $initializations = [];
         foreach ($table->getColumns() as $column) {
-            if ($column->getDefault() === null || $this->isPrimaryColumn($table, $column)) {
+            if ($column->getDefault() === null || $this->isPrimaryColumn($table, $column)
+                // With MariaDB >= 10.2.7 and doctrine/dbal < 2.7.0 "NULL"
+                // will be returned as string if there is no default, see:
+                // https://github.com/doctrine/doctrine2/issues/6565
+                || $column->getDefault() === "NULL") {
                 continue;
             }