diff --git a/code/elemental/ElementContentExtension.php b/code/elemental/ElementContentExtension.php
index a517a50..7a162a6 100644
--- a/code/elemental/ElementContentExtension.php
+++ b/code/elemental/ElementContentExtension.php
@@ -28,7 +28,7 @@ class ElementContentExtension extends Extension
         'MyFile' => File::class,
     ];
 
-    protected function updatevalidate(ValidationResult $result)
+    protected function updateValidate(ValidationResult $result)
     {
         if ($this->owner->Title == 'x') {
             $result->addFieldError('Title', 'Title cannot be x');