diff --git a/lib/Cpdf.php b/lib/Cpdf.php
index 4df67678a..d47a4b27e 100644
--- a/lib/Cpdf.php
+++ b/lib/Cpdf.php
@@ -4801,12 +4801,12 @@ protected function addImagePngAlpha($file, $x, $y, $w, $h, $byte)
         imagesavealpha($img, false);
 
         // create temp alpha file
-        $tempfile_alpha = tempnam($this->tmp, "cpdf_img_");
+        $tempfile_alpha = @tempnam($this->tmp, "cpdf_img_");
         @unlink($tempfile_alpha);
         $tempfile_alpha = "$tempfile_alpha.png";
 
         // create temp plain file
-        $tempfile_plain = tempnam($this->tmp, "cpdf_img_");
+        $tempfile_plain = @tempnam($this->tmp, "cpdf_img_");
         @unlink($tempfile_plain);
         $tempfile_plain = "$tempfile_plain.png";
 
diff --git a/src/Adapter/CPDF.php b/src/Adapter/CPDF.php
index 03df164a6..889eb4da2 100644
--- a/src/Adapter/CPDF.php
+++ b/src/Adapter/CPDF.php
@@ -627,7 +627,7 @@ protected function _convert_gif_bmp_to_png($image_url, $type)
             imageinterlace($im, false);
 
             $tmp_dir = $this->_dompdf->getOptions()->getTempDir();
-            $tmp_name = tempnam($tmp_dir, "{$type}dompdf_img_");
+            $tmp_name = @tempnam($tmp_dir, "{$type}dompdf_img_");
             @unlink($tmp_name);
             $filename = "$tmp_name.png";
             $this->_image_cache[] = $filename;
diff --git a/src/Adapter/PDFLib.php b/src/Adapter/PDFLib.php
index 42d079f8c..b07e91b1f 100644
--- a/src/Adapter/PDFLib.php
+++ b/src/Adapter/PDFLib.php
@@ -208,7 +208,7 @@ public function __construct($paper = "letter", $orientation = "portrait", Dompdf
             $this->_pdf->begin_document("", "");
         } else {
             $tmp_dir = $this->_dompdf->getOptions()->getTempDir();
-            $tmp_name = tempnam($tmp_dir, "libdompdf_pdf_");
+            $tmp_name = @tempnam($tmp_dir, "libdompdf_pdf_");
             @unlink($tmp_name);
             $this->_file = "$tmp_name.pdf";
             $this->_pdf->begin_document($this->_file, "");
diff --git a/src/FontMetrics.php b/src/FontMetrics.php
index be835f04b..0266e589e 100644
--- a/src/FontMetrics.php
+++ b/src/FontMetrics.php
@@ -186,7 +186,7 @@ public function registerFont($style, $remoteFile, $context = null)
         $fontDir = $this->getOptions()->getFontDir();
         $remoteHash = md5($remoteFile);
         $localFile = $fontDir . DIRECTORY_SEPARATOR . $remoteHash;
-        $localTempFile = tempnam($this->options->get("tempDir"), "dompdf-font-");
+        $localTempFile = @tempnam($this->options->get("tempDir"), "dompdf-font-");
 
         $cacheEntry = $localFile;
         $localFile .= ".".strtolower(pathinfo(parse_url($remoteFile, PHP_URL_PATH),PATHINFO_EXTENSION));
diff --git a/src/Image/Cache.php b/src/Image/Cache.php
index 8d073c22a..479d2e679 100644
--- a/src/Image/Cache.php
+++ b/src/Image/Cache.php
@@ -88,7 +88,7 @@ static function resolve_url($url, $protocol, $host, $base_path, Dompdf $dompdf)
                     } // From remote
                     else {
                         $tmp_dir = $dompdf->getOptions()->getTempDir();
-                        $resolved_url = tempnam($tmp_dir, "ca_dompdf_img_");
+                        $resolved_url = @tempnam($tmp_dir, "ca_dompdf_img_");
                         $image = "";
 
                         if ($data_uri) {
diff --git a/src/Renderer/AbstractRenderer.php b/src/Renderer/AbstractRenderer.php
index 9a3df2f84..502e78a02 100644
--- a/src/Renderer/AbstractRenderer.php
+++ b/src/Renderer/AbstractRenderer.php
@@ -401,7 +401,7 @@ protected function _background_image($url, $x, $y, $width, $height, $style)
             $this->_canvas->get_cpdf()->addImagePng($filedummy, $x, $this->_canvas->get_height() - $y - $height, $width, $height, $bg);
         } else {
             $tmp_dir = $this->_dompdf->getOptions()->getTempDir();
-            $tmp_name = tempnam($tmp_dir, "bg_dompdf_img_");
+            $tmp_name = @tempnam($tmp_dir, "bg_dompdf_img_");
             @unlink($tmp_name);
             $tmp_file = "$tmp_name.png";