diff --git a/src/PhpWord/Element/PreserveText.php b/src/PhpWord/Element/PreserveText.php
index c0e64268ba..803ee4f395 100644
--- a/src/PhpWord/Element/PreserveText.php
+++ b/src/PhpWord/Element/PreserveText.php
@@ -60,7 +60,7 @@ public function __construct($text = null, $fontStyle = null, $paragraphStyle = n
         $this->paragraphStyle = $this->setNewStyle(new Paragraph(), $paragraphStyle);
 
         $this->text = SharedText::toUTF8($text);
-        $matches = preg_split('/({.*?})/', $this->text, null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
+        $matches = preg_split('/({.*?})/', $this->text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
         if (isset($matches[0])) {
             $this->text = $matches;
         }
diff --git a/src/PhpWord/Shared/XMLWriter.php b/src/PhpWord/Shared/XMLWriter.php
index 930ad62ee1..dbe0db1dfa 100644
--- a/src/PhpWord/Shared/XMLWriter.php
+++ b/src/PhpWord/Shared/XMLWriter.php
@@ -171,6 +171,7 @@ public function writeAttributeIf($condition, $attribute, $value)
      * @param mixed $value
      * @return bool
      */
+     #[\ReturnTypeWillChange]
     public function writeAttribute($name, $value)
     {
         if (is_float($value)) {