diff --git a/lightrag/prompt.py b/lightrag/prompt.py
index a4641480..656801c0 100644
--- a/lightrag/prompt.py
+++ b/lightrag/prompt.py
@@ -226,7 +226,7 @@ When handling relationships with timestamps:
 - List up to 5 most important reference sources at the end under "References" section. Clearly indicating whether each source is from Knowledge Graph (KG) or Document Chunks (DC), and include the file path if available, in the following format: [KG/DC] file_path
 - If you don't know the answer, just say so.
 - Do not make anything up. Do not include information not provided by the Knowledge Base.
-- Addtional user prompt: {user_prompt}
+- Additional user prompt: {user_prompt}
 
 Response:"""