diff --git a/core/Command/Db/Migrations/GenerateCommand.php b/core/Command/Db/Migrations/GenerateCommand.php
index cec93146d77..5bc7a3abdf2 100644
--- a/core/Command/Db/Migrations/GenerateCommand.php
+++ b/core/Command/Db/Migrations/GenerateCommand.php
@@ -23,7 +23,7 @@ use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Question\ConfirmationQuestion;
 
 class GenerateCommand extends Command implements CompletionAwareInterface {
-	private const string TEMPLATE
+	private const TEMPLATE
 		= '<?php
 
 declare(strict_types=1);
diff --git a/lib/private/App/PlatformRepository.php b/lib/private/App/PlatformRepository.php
index 1a1e27783a1..504b9a00fe1 100644
--- a/lib/private/App/PlatformRepository.php
+++ b/lib/private/App/PlatformRepository.php
@@ -127,7 +127,7 @@ class PlatformRepository {
 		return null;
 	}
 
-	private const string MODIFIER_REGEX = '[._-]?(?:(stable|beta|b|RC|alpha|a|patch|pl|p)(?:[.-]?(\d+))?)?([.-]?dev)?';
+	private const MODIFIER_REGEX = '[._-]?(?:(stable|beta|b|RC|alpha|a|patch|pl|p)(?:[.-]?(\d+))?)?([.-]?dev)?';
 
 	/**
 	 * Normalizes a version string to be able to perform comparisons on it
diff --git a/lib/private/Setup.php b/lib/private/Setup.php
index 7ba40f6578b..93b07e37b2e 100644
--- a/lib/private/Setup.php
+++ b/lib/private/Setup.php
@@ -72,7 +72,7 @@ class Setup {
 		$this->l10n = $l10nFactory->get('lib');
 	}
 
-	private const array DB_SETUP_CLASSES = [
+	private const DB_SETUP_CLASSES = [
 		'mysql' => MySQL::class,
 		'pgsql' => PostgreSQL::class,
 		'oci' => OCI::class,