diff --git a/lib/RetailCrm/Methods/V5/Costs.php b/lib/RetailCrm/Methods/V5/Costs.php
index d1278dd..9f0f109 100644
--- a/lib/RetailCrm/Methods/V5/Costs.php
+++ b/lib/RetailCrm/Methods/V5/Costs.php
@@ -201,7 +201,7 @@ trait Costs
      */
     public function costsDeleteById($id)
     {
-        if (!empty($id)) {
+        if (empty($id)) {
             throw new \InvalidArgumentException(
                 'Parameter `id` must contains a data'
             );