diff --git a/FormRenderer.php b/FormRenderer.php
index 034dc41cc3..74b61ff109 100644
--- a/FormRenderer.php
+++ b/FormRenderer.php
@@ -293,9 +293,9 @@ public function humanize($text)
     public function encodeCurrency(Environment $environment, string $text, string $widget = ''): string
     {
         if ('UTF-8' === $charset = $environment->getCharset()) {
-            $text = htmlspecialchars($text, ENT_QUOTES | (\defined('ENT_SUBSTITUTE') ? ENT_SUBSTITUTE : 0), 'UTF-8');
+            $text = htmlspecialchars($text, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
         } else {
-            $text = htmlentities($text, ENT_QUOTES | (\defined('ENT_SUBSTITUTE') ? ENT_SUBSTITUTE : 0), 'UTF-8');
+            $text = htmlentities($text, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
             $text = iconv('UTF-8', $charset, $text);
             $widget = iconv('UTF-8', $charset, $widget);
         }