diff --git a/tests/HttpApplicationRunnerTest.php b/tests/HttpApplicationRunnerTest.php
index 92dea12..4ed2c8e 100644
--- a/tests/HttpApplicationRunnerTest.php
+++ b/tests/HttpApplicationRunnerTest.php
@@ -113,7 +113,7 @@ public function testRunWithFailureDuringProcess(): void
     {
         $runner = $this->runner->withContainer($this->createContainer(true));
 
-        $this->expectOutputRegex("/^Exception with message \"Failure\"/");
+        $this->expectOutputRegex('/^Exception with message "Failure"/');
 
         $runner->run();
     }