diff --git a/app/Node/UseCases/CreateNode.php b/app/Node/UseCases/CreateNode.php
index dcb8afa..87d8ead 100644
--- a/app/Node/UseCases/CreateNode.php
+++ b/app/Node/UseCases/CreateNode.php
@@ -2,6 +2,7 @@
 
 namespace App\Node\UseCases;
 
+use App\Exceptions\BadRequestException;
 use App\Node\Node;
 use App\Node\CreateNodeDto;
 use App\Node\NodeRepository;
@@ -20,6 +21,14 @@ class CreateNode
      */
     public function execute(CreateNodeRequest $request): Node
     {
+        if ($request->textId === null) {
+            throw new BadRequestException('textId is required');
+        }
+
+        if ($request->title === null) {
+            throw new BadRequestException('title is required');
+        }
+
         $textId = $request->textId;
         $text = $this->textRepo->find($textId);
         if ($text === null) {