diff --git a/langfuse/langchain/CallbackHandler.py b/langfuse/langchain/CallbackHandler.py
index b4c27c3bc..98ef24680 100644
--- a/langfuse/langchain/CallbackHandler.py
+++ b/langfuse/langchain/CallbackHandler.py
@@ -78,6 +78,7 @@ def __init__(
             update_trace: Whether to update the Langfuse trace with the chains input / output / metadata / name. Defaults to False.
         """
         self.client = get_client(public_key=public_key)
+        self.run_inline = True
 
         self.runs: Dict[
             UUID,