diff --git a/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/IsNullConstraint.php b/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/IsNullConstraint.php
index 401be63..714a0d2 100644
--- a/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/IsNullConstraint.php
+++ b/core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/IsNullConstraint.php
@@ -14,7 +14,7 @@
  *
  * Overrides the symfony constraint to handle empty Typed Data structures.
  *
- * @Plugin(
+ * @Constraint(
  *   id = "Null",
  *   label = @Translation("Null", context = "Validation"),
  *   type = false
diff --git a/core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestCompositeConstraint.php b/core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestCompositeConstraint.php
index c3b6ce8..79f6c02 100644
--- a/core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestCompositeConstraint.php
+++ b/core/modules/system/tests/modules/entity_test/src/Plugin/Validation/Constraint/EntityTestCompositeConstraint.php
@@ -12,7 +12,7 @@
 /**
  * Constraint with multiple fields.
  *
- * @Plugin(
+ * @Constraint(
  *   id = "EntityTestComposite",
  *   label = @Translation("Constraint with multiple fields."),
  *   type = "entity"