diff --git a/Classes/Controller/AssistantModuleController.php b/Classes/Controller/AssistantModuleController.php
index 9536e5e..ebecc68 100644
--- a/Classes/Controller/AssistantModuleController.php
+++ b/Classes/Controller/AssistantModuleController.php
@@ -133,7 +133,7 @@ public function addThreadMessageAction(string $organizationId, string $threadId,
         $organization = $this->organizationRepository->findById($organizationId);
         $assistant = $organization->assistantDepartment->findAssistantById($assistantId);
         try {
-            $assistant->continueThread($threadId, $message, $withAdditionalInstructions);
+            $assistant->continueThread($threadId, $message);
             $metadata = $assistant->getCollectedMetadata();
             $this->view->assignMultiple([
                 'organizationId' => $organizationId,
diff --git a/Classes/Controller/ChatController.php b/Classes/Controller/ChatController.php
index 7d6159f..0126f7a 100644
--- a/Classes/Controller/ChatController.php
+++ b/Classes/Controller/ChatController.php
@@ -38,7 +38,7 @@ public function startAction(string $organizationId, string $assistantId, string
         $organization = $this->organizationRepository->findById($organizationId);
         $assistant = $organization->assistantDepartment->findAssistantById($assistantId);
         $threadId = $assistant->startThread();
-        $assistant->continueThread($threadId, $message, true);
+        $assistant->continueThread($threadId, $message);
 
         $messageResponses = $assistant->readThread($threadId);
         $lastMessageKey = array_key_last($messageResponses);
diff --git a/Classes/Domain/Assistant.php b/Classes/Domain/Assistant.php
index 2da4733..c821f9a 100644
--- a/Classes/Domain/Assistant.php
+++ b/Classes/Domain/Assistant.php
@@ -51,7 +51,7 @@ public function startThread(): string
         return $threadResponse->id;
     }
 
-    public function continueThread(string $threadId, string $message, bool $withAdditionalInstructions = false): void
+    public function continueThread(string $threadId, string $message): void
     {
         $this->client->threads()->messages()->create(
             $threadId,
@@ -65,9 +65,7 @@ public function continueThread(string $threadId, string $message, bool $withAddi
             $threadId,
             array_filter([
                 'assistant_id' => $this->id,
-                'additional_instructions' => $withAdditionalInstructions
-                    ? $this->instructions->getContent()
-                    : null
+                'additional_instructions' => $this->instructions->getContent()
             ])
         );
         $this->completeRun($threadId, $runResponse->id);