diff --git a/backend/tests/app/controller/test_chat_controller.py b/backend/tests/app/controller/test_chat_controller.py
index 916c4e39..137a7d00 100644
--- a/backend/tests/app/controller/test_chat_controller.py
+++ b/backend/tests/app/controller/test_chat_controller.py
@@ -59,6 +59,10 @@ class TestChatController:
             ) as mock_step_solve,
             patch("app.controller.chat_controller.load_dotenv"),
             patch("app.controller.chat_controller.set_current_task_id"),
+            patch(
+                "app.controller.chat_controller._prepare_browser_for_request_with_timeout",
+                new=AsyncMock(return_value=True),
+            ),
             patch("pathlib.Path.mkdir"),
             patch("pathlib.Path.home", return_value=MagicMock()),
         ):