diff --git a/autogen/agentchat/contrib/reasoning_agent.py b/autogen/agentchat/contrib/reasoning_agent.py
index 5b437310a7..c1e3391b89 100644
--- a/autogen/agentchat/contrib/reasoning_agent.py
+++ b/autogen/agentchat/contrib/reasoning_agent.py
@@ -67,7 +67,7 @@ def __init__(self, content: str, parent: Optional["ThinkNode"] = None) -> None:
         self.parent = parent
         self.depth = self.parent.depth + 1 if parent else 0
         self.children = []
-        self.visits = 0
+        self.visits = 0  # TODO: remove this line if not used.
         if self.parent:
             self.parent.children.append(self)