diff --git a/cmd/metricscollector/v1alpha3/tfevent-metricscollector/main.py b/cmd/metricscollector/v1alpha3/tfevent-metricscollector/main.py
index 73992d73f52..8d2d05ac7ef 100644
--- a/cmd/metricscollector/v1alpha3/tfevent-metricscollector/main.py
+++ b/cmd/metricscollector/v1alpha3/tfevent-metricscollector/main.py
@@ -39,7 +39,7 @@ def parse_options():
 
     WaitOtherMainProcesses(completed_marked_dir=opt.dir_path)
 
-    mc = MetricsCollector(opt.metric_names.split(','))
+    mc = MetricsCollector(opt.metric_names.split(';'))
     observation_log = mc.parse_file(opt.dir_path)
 
     channel = grpc.beta.implementations.insecure_channel(
diff --git a/pkg/metricscollector/v1alpha3/tfevent-metricscollector/tfevent_loader.py b/pkg/metricscollector/v1alpha3/tfevent-metricscollector/tfevent_loader.py
index 0531c580939..e0dd7b7dc46 100644
--- a/pkg/metricscollector/v1alpha3/tfevent-metricscollector/tfevent_loader.py
+++ b/pkg/metricscollector/v1alpha3/tfevent-metricscollector/tfevent_loader.py
@@ -12,6 +12,8 @@
 # When the event file is under a directory(e.g. test dir), please specify "{{dirname}}/{{metrics name}}"
 # For example, in the TensorFlow official tutorial for mnist with summary (https://github.com/tensorflow/tensorflow/blob/master/tensorflow/examples/tutorials/mnist/mnist_with_summaries.py),
 # the "accuracy" metric is saved under "train" and "test" directories. So in Katib, please specify name of metrics as "train/accuracy" and "test/accuracy".
+
+
 class TFEventFileParser:
     def find_all_files(self, directory):
         for root, dirs, files in os.walk(directory):
@@ -22,23 +24,24 @@ def find_all_files(self, directory):
     def parse_summary(self, tfefile, metrics):
         metric_logs = []
         for summary in tf.train.summary_iterator(tfefile):
-            paths=tfefile.split("/")
+            paths = tfefile.split("/")
             for v in summary.summary.value:
                 for m in metrics:
                     tag = str(v.tag)
                     if len(paths) >= 2 and len(m.split("/")) >= 2:
-                            tag = str(paths[-2]+"/" + v.tag)
+                        tag = str(paths[-2]+"/" + v.tag)
                     if tag.startswith(m):
                         ml = api_pb2.MetricLog(
-                                time_stamp=rfc3339.rfc3339(datetime.fromtimestamp(summary.wall_time)),
-                                metric=api_pb2.Metric(
-                                    name=m,
-                                    value=str(v.simple_value)
-                                )
+                            time_stamp=rfc3339.rfc3339(datetime.fromtimestamp(summary.wall_time)),
+                            metric=api_pb2.Metric(
+                                name=m,
+                                value=str(v.simple_value)
                             )
+                        )
                         metric_logs.append(ml)
         return metric_logs
 
+
 class MetricsCollector:
     def __init__(self, metric_names):
         self.logger = getLogger(__name__)
@@ -59,6 +62,6 @@ def parse_file(self, directory):
                 self.logger.info(f + " will be parsed.")
                 mls.extend(self.parser.parse_summary(f, self.metrics))
             except Exception as e:
-                self.logger.warning("Unexpected error: "+ str(e))
+                self.logger.warning("Unexpected error: " + str(e))
                 continue
         return api_pb2.ObservationLog(metric_logs=mls)