diff --git a/packages/markitdown/src/markitdown/converters/_llm_caption.py b/packages/markitdown/src/markitdown/converters/_llm_caption.py
index 9108eab..d8fc921 100644
--- a/packages/markitdown/src/markitdown/converters/_llm_caption.py
+++ b/packages/markitdown/src/markitdown/converters/_llm_caption.py
@@ -49,8 +49,8 @@ def llm_caption(
     # Call the OpenAI API
     response = client.chat.completions.create(model=model, messages=messages)
     if asyncio.iscoroutine(response):
-        async def read_content():
+        async def read_content(response):
             response = await response
             return response.choices[0].message.content
-        return read_content()
+        return read_content(response)
     return response.choices[0].message.content