diff --git a/engine/Shopware/Controllers/Backend/Search.php b/engine/Shopware/Controllers/Backend/Search.php
index 6b1f966fbec..e7117731928 100644
--- a/engine/Shopware/Controllers/Backend/Search.php
+++ b/engine/Shopware/Controllers/Backend/Search.php
@@ -23,6 +23,7 @@
  */
 
 use Doctrine\DBAL\Connection;
+use Shopware\Models\Article\Article;
 
 /**
  * Backend search controller
@@ -353,6 +354,12 @@ private function addSearchTermCondition($entity, $query, $term)
             return 'entity.' . $field;
         }, $fields);
 
+        switch ($entity) {
+            case Article::class:
+                $fields[] = 'mainDetail.number';
+                break;
+        }
+
         $builder->addSearchTerm($query, $term, $fields);
     }