diff --git a/typo3/sysext/core/Classes/Resource/Processing/LocalImageProcessor.php b/typo3/sysext/core/Classes/Resource/Processing/LocalImageProcessor.php
index abe2cb6abd45add0ab21d192a88580732ad65d5c..728d3df950f8adff9e15ee064c95ca2046802cdb 100644
--- a/typo3/sysext/core/Classes/Resource/Processing/LocalImageProcessor.php
+++ b/typo3/sysext/core/Classes/Resource/Processing/LocalImageProcessor.php
@@ -114,8 +114,8 @@ class LocalImageProcessor implements ProcessorInterface, LoggerAwareInterface
             $task->setExecuted(true);
             $imageDimensions = $this->getGraphicalFunctionsObject()->getImageDimensions($localProcessedFile);
             $properties = [
-                'width' => $imageDimensions[0],
-                'height' => $imageDimensions[1],
+                'width' => $imageDimensions[0] ?? 0,
+                'height' => $imageDimensions[1] ?? 0,
                 'size' => filesize($localProcessedFile),
                 'checksum' => $task->getConfigurationChecksum(),
             ];