diff --git a/tests/llm_translation/test_deepseek_completion.py b/tests/llm_translation/test_deepseek_completion.py
index 6c27ea59d4..79a1865598 100644
--- a/tests/llm_translation/test_deepseek_completion.py
+++ b/tests/llm_translation/test_deepseek_completion.py
@@ -30,6 +30,7 @@ def test_deepseek_mock_completion(stream):
         messages=[{"role": "user", "content": "Hello, world!"}],
         api_base="https://exampleopenaiendpoint-production.up.railway.app/v1/chat/completions",
         stream=stream,
+        mock_response="Hello! How can I help you today?",
     )
     print(f"response: {response}")
     if stream: