diff --git a/src/Form/UiInput.php b/src/Form/UiInput.php
index 1490b15..0497fbb 100644
--- a/src/Form/UiInput.php
+++ b/src/Form/UiInput.php
@@ -22,10 +22,11 @@ class UiInput extends UiElement implements Extension {
         return "<?php echo ( new \\" . static::class . "() )->buildHtml($arguments) ?>";
     }
 
-    public function buildHtml(string $name, string $value, array $attributes = []) : string
+    public function buildHtml(string $name, ? string $value = null, array $attributes = []) : string
     {
         $this->setValue($value);
         $this->attributes([ 'name' => $name ] + $attributes + $this->attributes);
+        
         return $this->render();
     }
 
diff --git a/src/Form/UiSelect.php b/src/Form/UiSelect.php
index 597251f..0fb92b5 100644
--- a/src/Form/UiSelect.php
+++ b/src/Form/UiSelect.php
@@ -22,7 +22,7 @@ class UiSelect extends UiElement implements Extension {
         return "<?php echo ( new \\" . static::class . "() )->buildHtml($arguments) ?>";
     }
 
-    public function buildHtml(string $name, array $list, $value, array $attributes = [], bool $strictComparison = true) : string
+    public function buildHtml(string $name, array $list, $value = null, array $attributes = [], bool $strictComparison = true) : string
     {
         $this->attributes([ 'name' => $name ] + $attributes + $this->attributes);
         $this->setList($list, $value, $strictComparison);
@@ -40,6 +40,7 @@ class UiSelect extends UiElement implements Extension {
         foreach($list as $key => $item) {
             if ($item instanceof UiElement) {
                 $this->append($item);
+                continue;
             }
             elseif ( is_array($item) ) {
                 $obj = new UiElement("optgroup");