diff --git a/evals/benchmark/benchmark.py b/evals/benchmark/benchmark.py
index 8ce76c83..ccb73a3c 100644
--- a/evals/benchmark/benchmark.py
+++ b/evals/benchmark/benchmark.py
@@ -248,7 +248,7 @@ def run_service_test(example, service_type, service, test_suite_config):
         deployment_type,
         test_suite_config.get("service_ip"),
         test_suite_config.get("service_port"),
-        test_suite_config.get("namespace")
+        test_suite_config.get("namespace"),
     )
 
     base_url = f"http://{svc_ip}:{port}"
diff --git a/evals/benchmark/utils.py b/evals/benchmark/utils.py
index 2256f0c3..d66212a0 100644
--- a/evals/benchmark/utils.py
+++ b/evals/benchmark/utils.py
@@ -29,8 +29,10 @@ def write_json(data, filename):
         logging.error(f"Failed to write {filename}: {e}")
         return False
 
+
 from kubernetes import client, config
 
+
 def get_service_cluster_ip(service_name, namespace="default"):
     # Load the Kubernetes configuration
     config.load_kube_config()  # or use config.load_incluster_config() if running inside a Kubernetes pod
diff --git a/evals/metrics/ragas/ragas.py b/evals/metrics/ragas/ragas.py
index c80ff94e..a2598773 100644
--- a/evals/metrics/ragas/ragas.py
+++ b/evals/metrics/ragas/ragas.py
@@ -123,7 +123,7 @@ def measure(self, test_case: Dict):
                 else:
                     if metric == "AnswerRelevancy" and self.embeddings is None:
                         raise ValueError("AnswerRelevancy metric need provide embeddings model.")
-                    tmp_metrics.append(self.metrics_instance[metric])
+                    tmp_metrics.append(self.metrics_instances[metric])
             self.metrics = tmp_metrics
         else:
             self.metrics = list(self.metric_instances.values())