diff --git a/src/PhpSpreadsheet/Reader/Xlsx.php b/src/PhpSpreadsheet/Reader/Xlsx.php
index b60bf047bf..63c1e1db65 100644
--- a/src/PhpSpreadsheet/Reader/Xlsx.php
+++ b/src/PhpSpreadsheet/Reader/Xlsx.php
@@ -1178,6 +1178,8 @@ protected function loadSpreadsheetFromFile(string $filename): Spreadsheet
                                     foreach ($shapes as $shape) {
                                         /** @var SimpleXMLElement $shape */
                                         $shape->registerXPathNamespace('v', Namespaces::URN_VML);
+                                        $shape->registerXPathNamespace('x', Namespaces::URN_VML);
+                                        $shape->registerXPathNamespace('o', Namespaces::URN_MSOFFICE);
 
                                         if (isset($shape['style'])) {
                                             $style = (string) $shape['style'];