diff --git a/README.md b/README.md
index 4e6e19b69..825d823fa 100644
--- a/README.md
+++ b/README.md
@@ -107,7 +107,7 @@ Just make sure you are mindful of the fact that the input to the runnable is the
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 
 prompt = ChatPromptTemplate.from_messages([
-    ["system", "You are a helpful assistant who always speaks in pirate dialect"],
+    ("system", "You are a helpful assistant who always speaks in pirate dialect"),
     MessagesPlaceholder(variable_name="messages"),
 ])