diff --git a/samples/Pdf/21b_Pdf.php b/samples/Pdf/21b_Pdf.php
index 6770b7c5..ad2f609b 100644
--- a/samples/Pdf/21b_Pdf.php
+++ b/samples/Pdf/21b_Pdf.php
@@ -52,4 +52,4 @@ if (\PHP_VERSION_ID < 80000) {
     $filename = $helper->getFileName('21b_Pdf_tcpdf.xlsx', 'pdf');
     $writer->setEditHtmlCallback('replaceBody');
     $writer->save($filename);
-}
\ No newline at end of file
+}
diff --git a/tests/PhpSpreadsheetTests/Functional/StreamTest.php b/tests/PhpSpreadsheetTests/Functional/StreamTest.php
index 3ca01fc4..03f9a2d9 100644
--- a/tests/PhpSpreadsheetTests/Functional/StreamTest.php
+++ b/tests/PhpSpreadsheetTests/Functional/StreamTest.php
@@ -22,7 +22,7 @@ class StreamTest extends TestCase
         if (\PHP_VERSION_ID < 80000) {
             $providerFormats = array_merge(
                 $providerFormats,
-                [['Tcpdf'],['Dompdf']]
+                [['Tcpdf'], ['Dompdf']]
             );
         }
 
diff --git a/tests/PhpSpreadsheetTests/Writer/Xlsx/UnparsedDataCloneTest.php b/tests/PhpSpreadsheetTests/Writer/Xlsx/UnparsedDataCloneTest.php
index 2eeaef9d..660e40fe 100644
--- a/tests/PhpSpreadsheetTests/Writer/Xlsx/UnparsedDataCloneTest.php
+++ b/tests/PhpSpreadsheetTests/Writer/Xlsx/UnparsedDataCloneTest.php
@@ -5,6 +5,7 @@ namespace PhpOffice\PhpSpreadsheetTests\Writer\Xlsx;
 use PhpOffice\PhpSpreadsheet\Settings;
 use PhpOffice\PhpSpreadsheet\Shared\File;
 use PHPUnit\Framework\TestCase;
+use ZipArchive;
 
 class UnparsedDataCloneTest extends TestCase
 {
@@ -35,7 +36,7 @@ class UnparsedDataCloneTest extends TestCase
         $writer->save($resultFilename);
         $dupname = 'Unable to open saved file';
 
-        $zip = new \ZipArchive();
+        $zip = new ZipArchive();
         if ($zip->open($resultFilename) !== false) {
             $names = [];
             $dupname = '';