diff --git a/build/composer-require-checker.json b/build/composer-require-checker.json
index 75cb6d099ec..05a759a45c2 100644
--- a/build/composer-require-checker.json
+++ b/build/composer-require-checker.json
@@ -19,7 +19,6 @@
     "Reflection",
     "SPL",
     "standard",
-    "pcntl",
     "mbstring",
     "hash",
     "tokenizer",
diff --git a/src/Command/CommandHelper.php b/src/Command/CommandHelper.php
index c3de7b2e84a..c6d1a59c385 100644
--- a/src/Command/CommandHelper.php
+++ b/src/Command/CommandHelper.php
@@ -51,8 +51,6 @@
 use function is_readable;
 use function is_string;
 use function mkdir;
-use function pcntl_async_signals;
-use function pcntl_signal;
 use function register_shutdown_function;
 use function sprintf;
 use function str_ends_with;
@@ -354,7 +352,6 @@ public static function begin(
 			throw new InceptionNotSuccessfulException();
 		}
 
-		self::setUpSignalHandler($errorOutput);
 		/** @var bool|null $customRulesetUsed */
 		$customRulesetUsed = $container->getParameter('customRulesetUsed');
 		if ($customRulesetUsed === null) {
@@ -498,19 +495,6 @@ private static function executeBootstrapFile(
 		}
 	}
 
-	private static function setUpSignalHandler(Output $output): void
-	{
-		if (!function_exists('pcntl_signal')) {
-			return;
-		}
-
-		pcntl_async_signals(true);
-		pcntl_signal(SIGINT, static function () use ($output): void {
-			$output->writeLineFormatted('');
-			exit(1);
-		});
-	}
-
 	/**
 	 * @param string[] $configFiles
 	 * @param array<string, string> $loaderParameters