diff --git a/src/backend/base/langflow/services/tracing/langwatch.py b/src/backend/base/langflow/services/tracing/langwatch.py
index a3888b39a58c..ca460c49188c 100644
--- a/src/backend/base/langflow/services/tracing/langwatch.py
+++ b/src/backend/base/langflow/services/tracing/langwatch.py
@@ -138,7 +138,7 @@ def end(
         if metadata and "flow_name" in metadata:
             self.trace.update(metadata=(self.trace.metadata or {}) | {"labels": [f"Flow: {metadata['flow_name']}"]})
 
-        if self.trace.api_key or self._client.api_key:
+        if self.trace.api_key or self._client._api_key:
             try:
                 self.trace.__exit__(None, None, None)
             except ValueError:  # ignoring token was created in a different Context errors