diff --git a/src/Controller/CAPI/WarrantyController.php b/src/Controller/CAPI/WarrantyController.php
index affdb892..e5f5437e 100644
--- a/src/Controller/CAPI/WarrantyController.php
+++ b/src/Controller/CAPI/WarrantyController.php
@@ -530,7 +530,7 @@ class WarrantyController extends APIController
             $warr = $em->getRepository(Warranty::class)->findOneBy(['serial' => $clean_serial]);
 
             if ($warr == null)
-                $warr_not_found_list[] = 'Warranty not found for ' . $clean_serial;
+                $warr_not_found_list[] = $clean_serial;
             else
                 $warranty_list[] = $this->generateWarrantyData($warr);
         }