diff --git a/cleantalk-antispam.php b/cleantalk-antispam.php
index 36c8844..b56e377 100644
--- a/cleantalk-antispam.php
+++ b/cleantalk-antispam.php
@@ -5,4 +5,4 @@
 require_once "lib/CleantalkRequest.php";
 require_once "lib/CleantalkResponse.php";
 require_once "lib/CleantalkAntispam.php";
-require_once "lib/CleantalkApi.php";
+require_once "lib/CleantalkAPI.php";