diff --git a/examples/create-react-agent-system-prompt.ipynb b/examples/create-react-agent-system-prompt.ipynb
index 6b04f77a1..c258a74c5 100644
--- a/examples/create-react-agent-system-prompt.ipynb
+++ b/examples/create-react-agent-system-prompt.ipynb
@@ -9,7 +9,7 @@
     "\n",
     "This tutorial will show how to add a custom system prompt to the prebuilt ReAct agent. Please see [this tutorial](./create-react-agent.ipynb) for how to get started with the prebuilt ReAct agent\n",
     "\n",
-    "You can add a custom system prompt by passing a string to the `messages_modifier` param."
+    "You can add a custom system prompt by passing a string to the `state_modifier` param."
    ]
   },
   {
@@ -112,7 +112,7 @@
     "\n",
     "from langgraph.prebuilt import create_react_agent\n",
     "\n",
-    "graph = create_react_agent(model, tools=tools, messages_modifier=prompt)"
+    "graph = create_react_agent(model, tools=tools, state_modifier=prompt)"
    ]
   },
   {