diff --git a/packages/core/src/Base/Traits/HasModelExtending.php b/packages/core/src/Base/Traits/HasModelExtending.php
index 7306c70705..9bcb53040b 100644
--- a/packages/core/src/Base/Traits/HasModelExtending.php
+++ b/packages/core/src/Base/Traits/HasModelExtending.php
@@ -46,6 +46,14 @@ public static function modelClass(): string
         return ModelManifest::get($contractClass) ?? static::class;
     }
 
+    /**
+     * Returns the morph class for a model class registered in the model manifest.
+     */
+    public function getMorphClass(): string
+    {
+        return parent::getMorphClass(static::modelClass());
+    }
+
     public static function isLunarInstance(): bool
     {
         return static::class == static::modelClass();