diff --git a/Classes/PHPExcel/Reader/Excel2007.php b/Classes/PHPExcel/Reader/Excel2007.php
index e8a3bce1f..f4b50f03f 100644
--- a/Classes/PHPExcel/Reader/Excel2007.php
+++ b/Classes/PHPExcel/Reader/Excel2007.php
@@ -1233,7 +1233,7 @@ public function load($pFilename)
 
                                         foreach (PHPExcel_Cell::extractAllCellReferencesInRange($hyperlink['ref']) as $cellReference) {
                                             $cell = $docSheet->getCell($cellReference);
-                                            if (isset($linkRel['id'])) {
+                                            if ($hyperlinks && isset($linkRel['id'])) {
                                                 $hyperlinkUrl = $hyperlinks[ (string)$linkRel['id'] ];
                                                 if (isset($hyperlink['location'])) {
                                                     $hyperlinkUrl .= '#' . (string) $hyperlink['location'];