diff --git a/enterprise/app/services/captain/llm/assistant_chat_service.rb b/enterprise/app/services/captain/llm/assistant_chat_service.rb
index 7f2113498..8077b22c9 100644
--- a/enterprise/app/services/captain/llm/assistant_chat_service.rb
+++ b/enterprise/app/services/captain/llm/assistant_chat_service.rb
@@ -3,10 +3,10 @@ require 'openai'
 class Captain::Llm::AssistantChatService < Llm::BaseOpenAiService
   include Captain::ChatHelper
 
-  def initialize(assistant)
+  def initialize(assistant: nil)
     super()
+
     @assistant = assistant
-    @tool_registry = Captain::ToolRegistryService.new(assistant)
     @messages = [system_message]
     @response = ''
     register_tools