diff --git a/Classes/PHPExcel/Helper/HTML.php b/Classes/PHPExcel/Helper/HTML.php
index 1e41e06..a78f11c 100644
--- a/Classes/PHPExcel/Helper/HTML.php
+++ b/Classes/PHPExcel/Helper/HTML.php
@@ -766,7 +766,7 @@ class PHPExcel_Helper_HTML
         $domText = preg_replace(
             '/\s+/u',
             ' ',
-            str_replace(["\r", "\n"], ' ', $textNode->nodeValue)
+            str_replace(array("\r", "\n"), ' ', $textNode->nodeValue)
         );
         $this->stringData .= $domText;
         $this->buildTextRun();