diff --git a/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidator.php b/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidator.php
index be11f80049..5ea950e905 100644
--- a/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidator.php
+++ b/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidator.php
@@ -72,7 +72,8 @@ public function validate($value, Constraint $constraint) {
 
     if (!$valid) {
       // @todo: Provide a good violation message for each problem.
-      $this->context->addViolation($constraint->message, [
+      $msg = $constraint->message . " " . get_class($typed_data) . ": " . $typed_data->getName();
+      $this->context->addViolation($msg, [
         '%value' => is_object($value) ? get_class($value) : (is_array($value) ? 'Array' : (string) $value),
       ]);
     }