diff --git a/langchain/agents/chat/prompt.py b/langchain/agents/chat/prompt.py
index ff1ec4d6..3625e202 100644
--- a/langchain/agents/chat/prompt.py
+++ b/langchain/agents/chat/prompt.py
@@ -18,7 +18,7 @@ ALWAYS use the following format:
 
 Question: the input question you must answer
 Thought: you should always think about what to do
-Action: 
+Action:
 ```
 $JSON_BLOB
 ```