diff --git a/libraries/microsoft-agents-a365-observability-extensions-langchain/microsoft_agents_a365/observability/extensions/langchain/tracer_instrumentor.py b/libraries/microsoft-agents-a365-observability-extensions-langchain/microsoft_agents_a365/observability/extensions/langchain/tracer_instrumentor.py
index 948ee59c..6c889fb8 100644
--- a/libraries/microsoft-agents-a365-observability-extensions-langchain/microsoft_agents_a365/observability/extensions/langchain/tracer_instrumentor.py
+++ b/libraries/microsoft-agents-a365-observability-extensions-langchain/microsoft_agents_a365/observability/extensions/langchain/tracer_instrumentor.py
@@ -72,7 +72,7 @@ def _instrument(self, **kwargs: Any) -> None:
         # Save and wrap BaseCallbackManager.__init__ to attach the processor once per instance.
         self._original_cb_init = langchain_core.callbacks.BaseCallbackManager.__init__
         wrap_function_wrapper(
-            module="langchain_core.callbacks",
+            target="langchain_core.callbacks",
             name="BaseCallbackManager.__init__",
             wrapper=_BaseCallbackManagerInit(self._tracer),
         )