diff --git a/lib/internal/Magento/Framework/Data/Form/Element/AbstractElement.php b/lib/internal/Magento/Framework/Data/Form/Element/AbstractElement.php
index 1b5a0d9ff8754..a8451e43ade20 100644
--- a/lib/internal/Magento/Framework/Data/Form/Element/AbstractElement.php
+++ b/lib/internal/Magento/Framework/Data/Form/Element/AbstractElement.php
@@ -583,11 +583,11 @@ public function isLocked()
     /**
      * Get input html by sting value.
      *
-     * @param string $value
+     * @param string|null $value
      *
      * @return string
      */
-    private function getHtmlForInputByValue(string $value)
+    private function getHtmlForInputByValue($value)
     {
         return '<input id="' . $this->getHtmlId() . '" name="' . $this->getName() . '" ' . $this->_getUiId()
             . ' value="' . $value . '" ' . $this->serialize($this->getHtmlAttributes()) . '/>';
diff --git a/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php b/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php
index dc97515e33754..0fc537fbe832a 100644
--- a/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php
+++ b/lib/internal/Magento/Framework/Test/Unit/Data/Form/Element/HiddenTest.php
@@ -4,7 +4,7 @@
  * See COPYING.txt for license details.
  */
 
-namespace Magento\Framework\Test\Unit\Data;
+namespace Magento\Framework\Test\Unit\Data\Form\Element;
 
 use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;