diff --git a/src/Preflight/PreflightSiteLocator.php b/src/Preflight/PreflightSiteLocator.php
index 9d281a0401..c339cc59b3 100644
--- a/src/Preflight/PreflightSiteLocator.php
+++ b/src/Preflight/PreflightSiteLocator.php
@@ -34,7 +34,7 @@ public function __construct(SiteAliasManager $siteAliasManager)
      *
      * @return SiteAlias|false
      */
-    public function findSite(PreflightArgsInterface $preflightArgs, Environment $environment, string $root): SiteAlias
+    public function findSite(PreflightArgsInterface $preflightArgs, Environment $environment, string $root)
     {
         $self = $this->determineSelf($preflightArgs, $environment, $root);
 
@@ -55,8 +55,10 @@ public function findSite(PreflightArgsInterface $preflightArgs, Environment $env
      * @param PreflightArgsInterface $preflightArgs
      * @param Environment $environment
      * @param $root
+     *
+     * @return SiteAlias|false
      */
-    protected function determineSelf(PreflightArgsInterface $preflightArgs, Environment $environment, $root): SiteAlias
+    protected function determineSelf(PreflightArgsInterface $preflightArgs, Environment $environment, $root)
     {
         if ($preflightArgs->hasAlias()) {
             $aliasName = $preflightArgs->alias();