diff --git a/src/Security/Member.php b/src/Security/Member.php
index 2003e8f05cd..68aef5db6f9 100644
--- a/src/Security/Member.php
+++ b/src/Security/Member.php
@@ -15,6 +15,7 @@
 use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Dev\TestMailer;
 use SilverStripe\Forms\CheckboxField;
+use SilverStripe\Forms\CompositeValidator;
 use SilverStripe\Forms\ConfirmedPasswordField;
 use SilverStripe\Forms\DropdownField;
 use SilverStripe\Forms\FieldList;
@@ -696,6 +697,14 @@ public function getValidator()
         return $validator;
     }
 
+    public function getCMSCompositeValidator(): CompositeValidator
+    {
+        $compositeValidator = parent::getCMSCompositeValidator();
+        $memberValidator = $this->getValidator();
+
+        return $compositeValidator->addValidator($memberValidator);
+    }
+
 
     /**
      * Temporarily act as the specified user, limited to a $callback, but