diff --git a/src/Controller/APIController.php b/src/Controller/APIController.php
index 0df9bffe..3669b52b 100644
--- a/src/Controller/APIController.php
+++ b/src/Controller/APIController.php
@@ -3355,9 +3355,9 @@ class APIController extends Controller implements LoggedController
 
 
         // remove QR prefix if it exists
-        $prefix = substr($clean_serial, 0, 2);
-        if ($prefix == 'QR')
-            $clean_serial = substr($clean_serial, 2);
+        // $prefix = substr($clean_serial, 0, 2);
+        // if ($prefix == 'QR')
+        //    $clean_serial = substr($clean_serial, 2);
 
         return $clean_serial;
     }
diff --git a/src/Controller/CAPI/CustomerWarrantyController.php b/src/Controller/CAPI/CustomerWarrantyController.php
index 9f007ac4..c5562d40 100644
--- a/src/Controller/CAPI/CustomerWarrantyController.php
+++ b/src/Controller/CAPI/CustomerWarrantyController.php
@@ -102,9 +102,9 @@ class CustomerWarrantyController extends APIController
 
 
         // remove QR prefix if it exists
-        $prefix = substr($clean_serial, 0, 2);
-        if ($prefix == 'QR')
-            $clean_serial = substr($clean_serial, 2);
+        //$prefix = substr($clean_serial, 0, 2);
+        //if ($prefix == 'QR')
+        //    $clean_serial = substr($clean_serial, 2);
 
         return $clean_serial;
     }