diff --git a/src/Metadata/AggregateRoot/ClassIsNotAnAggregate.php b/src/Metadata/AggregateRoot/ClassIsNotAnAggregate.php
index 4cf9b48f8..6934c60da 100644
--- a/src/Metadata/AggregateRoot/ClassIsNotAnAggregate.php
+++ b/src/Metadata/AggregateRoot/ClassIsNotAnAggregate.php
@@ -8,4 +8,11 @@
 
 final class ClassIsNotAnAggregate extends MetadataException
 {
+    /**
+     * @param class-string $class
+     */
+    public function __construct(string $class)
+    {
+        parent::__construct(sprintf('class %s is not an aggregate root', $class));
+    }
 }
diff --git a/src/Metadata/Event/ClassIsNotAnEvent.php b/src/Metadata/Event/ClassIsNotAnEvent.php
index 76a77c2a7..3d4f601cf 100644
--- a/src/Metadata/Event/ClassIsNotAnEvent.php
+++ b/src/Metadata/Event/ClassIsNotAnEvent.php
@@ -8,4 +8,11 @@
 
 final class ClassIsNotAnEvent extends MetadataException
 {
+    /**
+     * @param class-string $class
+     */
+    public function __construct(string $class)
+    {
+        parent::__construct(sprintf('class %s is not an event', $class));
+    }
 }