diff --git a/test/functional/PiRemoveUserTest.php b/test/functional/PiRemoveUserTest.php
index 7953e5be..79ecd1ee 100644
--- a/test/functional/PiRemoveUserTest.php
+++ b/test/functional/PiRemoveUserTest.php
@@ -7,7 +7,7 @@
 class PiRemoveUserTest extends TestCase {
     private function removeUser(string $uid)
     {
-        post(
+        http_post(
             __DIR__ . "/../../webroot/panel/pi.php",
             ["form_name" => "remUser", "uid" => $uid]
         );