diff --git a/src/PhpWord/Writer/AbstractWriter.php b/src/PhpWord/Writer/AbstractWriter.php
index 2c1ad29460..e897a634f1 100644
--- a/src/PhpWord/Writer/AbstractWriter.php
+++ b/src/PhpWord/Writer/AbstractWriter.php
@@ -351,7 +351,7 @@ protected function addFilesToPackage(ZipArchive $zip, $elements)
 
             // Retrive GD image content or get local media
             if (isset($element['isMemImage']) && $element['isMemImage']) {
-                $image = call_user_func($element['createFunction'], $element['source']);
+                $image = @call_user_func($element['createFunction'], $element['source']);
                 if ($element['imageType'] === 'image/png') {
                     // PNG images need to preserve alpha channel information
                     imagesavealpha($image, true);