diff --git a/docs/changes/1.1.0.md b/docs/changes/1.1.0.md
index e09f322ef..6e1c14c9c 100644
--- a/docs/changes/1.1.0.md
+++ b/docs/changes/1.1.0.md
@@ -29,6 +29,7 @@
 - PowerPoint2007 Reader : Load images from file only if valid - [@aelliott1485](https://github.com/aelliott1485) in [#775](https://github.com/PHPOffice/PHPPresentation/pull/775)
 - PowerPoint2007 Writer : Fixed broken video file relationship - [@potofcoffee](https://github.com/potofcoffee) in [#776](https://github.com/PHPOffice/PHPPresentation/pull/776)
 - PowerPoint2007 Writer : Fixed issue when first element in series is null - [@ksmeeks0001](https://github.com/ksmeeks0001) in [#778](https://github.com/PHPOffice/PHPPresentation/pull/778)
+- PowerPoint2007 & ODPresentation Writer : Use of the disk caching directory for temporary files - [@nhalle](https://github.com/nhalle) in [#781](https://github.com/PHPOffice/PHPPresentation/pull/781)
 
 ## Miscellaneous
 
diff --git a/src/PhpPresentation/Writer/ODPresentation.php b/src/PhpPresentation/Writer/ODPresentation.php
index 7d2ba6073..5c8432fac 100644
--- a/src/PhpPresentation/Writer/ODPresentation.php
+++ b/src/PhpPresentation/Writer/ODPresentation.php
@@ -81,7 +81,7 @@ public function save(string $pFilename): void
         // If $pFilename is php://output or php://stdout, make it a temporary file...
         $originalFilename = $pFilename;
         if ('php://output' == strtolower($pFilename) || 'php://stdout' == strtolower($pFilename)) {
-            $pFilename = @tempnam('./', 'phppttmp');
+            $pFilename = @tempnam($this->diskCachingDirectory, 'phppttmp');
             if ('' == $pFilename) {
                 $pFilename = $originalFilename;
             }
diff --git a/src/PhpPresentation/Writer/PowerPoint2007.php b/src/PhpPresentation/Writer/PowerPoint2007.php
index 9c94d3f08..a116ca8a3 100644
--- a/src/PhpPresentation/Writer/PowerPoint2007.php
+++ b/src/PhpPresentation/Writer/PowerPoint2007.php
@@ -79,7 +79,7 @@ public function save(string $pFilename): void
         // If $pFilename is php://output or php://stdout, make it a temporary file...
         $originalFilename = $pFilename;
         if ('php://output' == strtolower($pFilename) || 'php://stdout' == strtolower($pFilename)) {
-            $pFilename = @tempnam('./', 'phppttmp');
+            $pFilename = @tempnam($this->diskCachingDir, 'phppttmp');
             if ('' == $pFilename) {
                 $pFilename = $originalFilename;
             }