diff --git a/app/Importers/MgImporterTrait.php b/app/Importers/MgImporterTrait.php
index 587f942e6..7fae50b57 100644
--- a/app/Importers/MgImporterTrait.php
+++ b/app/Importers/MgImporterTrait.php
@@ -20,7 +20,7 @@ protected function init(): void
         };
 
         $this->sanitizers[] = function ($value) {
-            return empty_to_null($value);
+            return empty_to_null(trim($value));
         };
 
         $this->mediumTranslationKeys = array_flip(trans('item.media', locale: 'cs'));