diff --git a/libs/langgraph/langgraph/_internal/_runnable.py b/libs/langgraph/langgraph/_internal/_runnable.py
index aa435eb8d..0e51c4286 100644
--- a/libs/langgraph/langgraph/_internal/_runnable.py
+++ b/libs/langgraph/langgraph/_internal/_runnable.py
@@ -318,7 +318,9 @@ class RunnableCallable(Runnable):
             # If the kwarg is accepted by the function, store the key / runtime attribute to inject
             # Use the actual parameter default from the function signature if available,
             # otherwise fall back to the default from KWARGS_CONFIG_KEYS
-            param_default = p.default if p.default is not inspect.Parameter.empty else default
+            param_default = (
+                p.default if p.default is not inspect.Parameter.empty else default
+            )
             self.func_accepts[kw] = (runtime_key, param_default)
 
     def __repr__(self) -> str:
diff --git a/libs/prebuilt/langgraph/prebuilt/chat_agent_executor.py b/libs/prebuilt/langgraph/prebuilt/chat_agent_executor.py
index 6c0df122d..b2d255cce 100644
--- a/libs/prebuilt/langgraph/prebuilt/chat_agent_executor.py
+++ b/libs/prebuilt/langgraph/prebuilt/chat_agent_executor.py
@@ -78,7 +78,7 @@ with warnings.catch_warnings():
     warnings.filterwarnings(
         "ignore",
         category=LangGraphDeprecatedSinceV10,
-        message="AgentState has been moved to langchain.agents.*",
+        message="AgentState has been moved to `langchain.agents`.*",
     )
 
     @deprecated(
@@ -95,11 +95,11 @@ with warnings.catch_warnings():
     warnings.filterwarnings(
         "ignore",
         category=LangGraphDeprecatedSinceV10,
-        message="AgentStatePydantic has been moved to langchain.agents.*",
+        message="AgentStatePydantic has been moved to `langchain.agents`.*",
     )
 
     @deprecated(
-        "AgentStateWithStructuredResponsePydantic has been moved to `langchain.agents`. Please update your import to `from langchain.agents import AgentStateWithStructuredResponsePydantic`.",
+        "AgentStateWithStructuredResponsePydantic has deprecated. The new `langchain.agents.AgentState` contains the structured response by default.",
         category=LangGraphDeprecatedSinceV10,
     )
     class AgentStateWithStructuredResponsePydantic(AgentStatePydantic):