diff --git a/tests/php/Integration/IntegrationTestCase.php b/tests/php/Integration/IntegrationTestCase.php
index b060d84..f6d945f 100644
--- a/tests/php/Integration/IntegrationTestCase.php
+++ b/tests/php/Integration/IntegrationTestCase.php
@@ -177,7 +177,7 @@ abstract class IntegrationTestCase extends TestCase
         // process-level error handler after the in-process request.
         $application = static::buildApplication();
         try {
-            $response = $application->handleHttp($request);
+            $response = $application->runHttpRequest($request);
         } finally {
             $application->shutdown();
         }