diff --git a/api/extensions/ext_otel.py b/api/extensions/ext_otel.py
index d7118cda98..8ebd909308 100644
--- a/api/extensions/ext_otel.py
+++ b/api/extensions/ext_otel.py
@@ -185,7 +185,7 @@ def init_app(app: DifyApp):
     set_meter_provider(MeterProvider(resource=resource, metric_readers=[reader]))
 
     # Get a meter instance
-    meter = get_meter(__name__) 
+    meter = get_meter(__name__)
 
     # Define the counter metric for HTTP client requests
     _http_client_response_counter = meter.create_counter(