diff --git a/src/agents/models/chatcmpl_converter.py b/src/agents/models/chatcmpl_converter.py
index b84f2e669..18d6be38b 100644
--- a/src/agents/models/chatcmpl_converter.py
+++ b/src/agents/models/chatcmpl_converter.py
@@ -460,7 +460,7 @@ def ensure_assistant_message() -> ChatCompletionAssistantMessageParam:
                 }
                 result.append(msg)
 
-            # 6) item reference => handle or raise
+            # 7) item reference => handle or raise
             elif item_ref := cls.maybe_item_reference(item):
                 raise UserError(
                     f"Encountered an item_reference, which is not supported: {item_ref}"