diff --git a/Message/Http/Request.php b/Message/Http/Request.php
index f8f7ec621..51e153428 100644
--- a/Message/Http/Request.php
+++ b/Message/Http/Request.php
@@ -132,11 +132,12 @@ class Request extends RequestAbstract
             $this->uri->set($uri['uri']);
         }
 
+        $this->data = array_change_key_case($this->data, CASE_LOWER);
+
         unset($_FILES);
         unset($_GET);
         unset($_POST);
-        unset($_PUT);
-        unset($_HEAD);
+        unset($_REQUEST);
 
         $this->path = explode('/', $this->uri->getPath());
         $this->l11n->setLanguage($this->path[0]);
diff --git a/Message/RequestAbstract.php b/Message/RequestAbstract.php
index 01720237a..57afe0266 100644
--- a/Message/RequestAbstract.php
+++ b/Message/RequestAbstract.php
@@ -175,6 +175,7 @@ abstract class RequestAbstract implements RequestInterface
      */
     public function getData($key = null)
     {
+        $key = mb_strtolower($key);
         return !isset($key) ? $this->data : $this->data[$key] ?? null;
     }
 
@@ -183,6 +184,7 @@ abstract class RequestAbstract implements RequestInterface
      */
     public function setData($key, $value, $overwrite = true)
     {
+        $key = mb_strtolower($key);
         if ($overwrite || !isset($this->data[$key])) {
             $this->data[$key] = $value;
         }