diff --git a/modules/setup/application/views/scripts/index/index.phtml b/modules/setup/application/views/scripts/index/index.phtml
index 3a6e17965..b2b3bda50 100644
--- a/modules/setup/application/views/scripts/index/index.phtml
+++ b/modules/setup/application/views/scripts/index/index.phtml
@@ -6,7 +6,7 @@ $pages = $wizard->getPages();
 $finished = isset($success);
 $configPages = array_slice($pages, 3, count($pages) - 4, true);
 $currentPos = array_search($wizard->getCurrentPage(), $pages, true);
-list($configPagesLeft, $configPagesRight) = array_chunk($configPages, count($configPages) / 2, true);
+list($configPagesLeft, $configPagesRight) = array_chunk($configPages, (int)(count($configPages) / 2), true);
 
 $visitedPages = array_keys($wizard->getPageData());
 $maxProgress = max(array_merge([0], array_keys(array_filter(
diff --git a/modules/setup/library/Setup/RequirementSet.php b/modules/setup/library/Setup/RequirementSet.php
index 4c5bb121a..672fad454 100644
--- a/modules/setup/library/Setup/RequirementSet.php
+++ b/modules/setup/library/Setup/RequirementSet.php
@@ -290,7 +290,7 @@ class RequirementSet implements RecursiveIterator
      */
     public function valid(): bool
     {
-        return $this->key() !== null;
+        return key($this->requirements) !== null;
     }
 
     /**