diff --git a/application/Espo/Core/Select/SearchParams.php b/application/Espo/Core/Select/SearchParams.php
index 489a2ce6cb..04f9118d09 100644
--- a/application/Espo/Core/Select/SearchParams.php
+++ b/application/Espo/Core/Select/SearchParams.php
@@ -187,7 +187,11 @@ class SearchParams
         $obj = clone $this;
         $obj->rawParams['order'] = $order;
 
-        if ($order !== self::ORDER_ASC && $order !== self::ORDER_DESC) {
+        if (
+            $order !== null &&
+            $order !== self::ORDER_ASC &&
+            $order !== self::ORDER_DESC
+        ) {
             throw new InvalidArgumentException("order value is bad.");
         }