diff --git a/core/components/importx/processors/startimport.class.php b/core/components/importx/processors/startimport.class.php
index c0d392b..e34c533 100644
--- a/core/components/importx/processors/startimport.class.php
+++ b/core/components/importx/processors/startimport.class.php
@@ -101,7 +101,7 @@ public function process()
     protected function setDefaultClassKey(array $record): array
     {
         $modxVersion = $this->modx->getVersionData();
-        if (version_compare($modxVersion['full_version'], '3.0.0-dev', '>=') && empty($line['class_key'])) {
+        if (version_compare($modxVersion['full_version'], '3.0.0-dev', '>=') && empty($record['class_key'])) {
             $record['class_key'] = 'MODX\Revolution\modDocument';
         }