diff --git a/src/Common/UiElement.php b/src/Common/UiElement.php
index e941c6d..5f6faa2 100644
--- a/src/Common/UiElement.php
+++ b/src/Common/UiElement.php
@@ -355,7 +355,8 @@ class UiElement implements \ArrayAccess, \Iterator, \JsonSerializable {
         return count($this->childs);
     }
 
-    public function jsonSerialize() {
+    public function jsonSerialize() : mixed
+    {
         return [
             'tag' => $this->tag,
             'attr' => $this->attributes,
@@ -364,6 +365,7 @@ class UiElement implements \ArrayAccess, \Iterator, \JsonSerializable {
         ];
     }
 
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value) {
         if ( is_numeric($offset) ) {
             return $this->selected[$offset] = $value;
@@ -406,6 +408,7 @@ class UiElement implements \ArrayAccess, \Iterator, \JsonSerializable {
         return key($this->childs);
     }
 
+    #[\ReturnTypeWillChange]
     public function next() : self
     {
         return next($this->childs);
diff --git a/src/Form/UiTextarea.php b/src/Form/UiTextarea.php
index c7c8b42..ff2df2a 100644
--- a/src/Form/UiTextarea.php
+++ b/src/Form/UiTextarea.php
@@ -22,7 +22,9 @@ class UiTextarea extends UiInput {
             $this->echoRaw = true;
         }
 
-        return sprintf("<?php echo ( new \\" . static::class . "() )->echoRaw(%s)->buildHtml($arguments) ?>", $this->echoRaw ? 'true' : 'false');
+        $raw = $this->echoRaw ? 'true' : 'false';
+
+        return "<?php echo ( new \\" . static::class . "() )->echoRaw($raw)->buildHtml($arguments) ?>";
     }