diff --git a/src/PhpSpreadsheet/Helper/Sample.php b/src/PhpSpreadsheet/Helper/Sample.php
index 1200db76..5b2c4685 100644
--- a/src/PhpSpreadsheet/Helper/Sample.php
+++ b/src/PhpSpreadsheet/Helper/Sample.php
@@ -5,6 +5,7 @@ namespace PhpOffice\PhpSpreadsheet\Helper;
 use PhpOffice\PhpSpreadsheet\IOFactory;
 use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PhpOffice\PhpSpreadsheet\Writer\IWriter;
+use PhpOffice\PhpSpreadsheet\Writer\Pdf;
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
 use RecursiveRegexIterator;
@@ -118,6 +119,11 @@ class Sample
         foreach ($writers as $writerType) {
             $path = $this->getFilename($filename, mb_strtolower($writerType));
             $writer = IOFactory::createWriter($spreadsheet, $writerType);
+            if ($writer instanceof Pdf) {
+                // PDF writer needs temporary directory
+                $tempDir = $this->getTemporaryFolder();
+                $writer->setTempDir($tempDir);
+            }
             $callStartTime = microtime(true);
             $writer->save($path);
             $this->logWrite($writer, $path, $callStartTime);
diff --git a/src/PhpSpreadsheet/Writer/Pdf/MPDF.php b/src/PhpSpreadsheet/Writer/Pdf/MPDF.php
index d20ec3b6..c97197bb 100644
--- a/src/PhpSpreadsheet/Writer/Pdf/MPDF.php
+++ b/src/PhpSpreadsheet/Writer/Pdf/MPDF.php
@@ -55,7 +55,8 @@ class MPDF extends Core implements IWriter
         }
 
         //  Create PDF
-        $pdf = new \Mpdf\Mpdf();
+        $config = ['tempDir' => $this->tempDir];
+        $pdf = new \Mpdf\Mpdf($config);
         $ortmp = $orientation;
         $pdf->_setPageSize(strtoupper($paperSize), $ortmp);
         $pdf->DefOrientation = $orientation;