diff --git a/fastchat/serve/gradio_block_arena_vision_anony.py b/fastchat/serve/gradio_block_arena_vision_anony.py
index f589a53e0..5b05864c5 100644
--- a/fastchat/serve/gradio_block_arena_vision_anony.py
+++ b/fastchat/serve/gradio_block_arena_vision_anony.py
@@ -283,7 +283,7 @@ def is_image(file_path):
 
 def pdf_parse(pdf_path):
     # Set API key, can also be configured in the environment
-    api_key = "LLAMA API"
+    api_key = os.environ["LLAMA_PARSE_KEY"]
 
     # Initialize the LlamaParse object
     parser = LlamaParse(