diff --git a/src/test/php/web/frontend/unittest/HtmxFlowTest.class.php b/src/test/php/web/frontend/unittest/HtmxFlowTest.class.php
index 6e71150..4d142dc 100755
--- a/src/test/php/web/frontend/unittest/HtmxFlowTest.class.php
+++ b/src/test/php/web/frontend/unittest/HtmxFlowTest.class.php
@@ -40,7 +40,7 @@ public function authenticate($request, $response, $session) {
 
   #[Test]
   public function returns_error_code_and_triggers_authenticationexpired_event() {
-    $res= $this->authenticate(['Hx-Request' => 'true'], new HtmxFlow(new class() extends Flow {
+    $res= $this->authenticate(['HX-Request' => 'true'], new HtmxFlow(new class() extends Flow {
       public function authenticate($request, $response, $session) {
         throw new IllegalStateException('Never called');
       }