diff --git a/lab06_evaluation.py b/lab06_evaluation.py
index 2aaddd7..3ac9a14 100644
--- a/lab06_evaluation.py
+++ b/lab06_evaluation.py
@@ -10,6 +10,7 @@ from sklearn.metrics import accuracy_score, f1_score
 from csv import DictWriter
 import torch.nn.functional as F
 import sys
+import os
 
 class Model(nn.Module):
     def __init__(self, input_dim):
@@ -52,9 +53,13 @@ def print_metrics(test_labels, predictions):
         print(f"Build number: {build_number}")
         field_names = ['BUILD_NUMBER', 'F1', 'ACCURACY']
         dict = {'BUILD_NUMBER': build_number, 'F1': f1, 'ACCURACY': accuracy }
+        filename = "./metrics.csv"
+        file_exists = os.path.isfile(filename)
 
-        with open('metrics.csv', 'a') as metrics_file:
+        with open(filename, 'a') as metrics_file:
             dictwriter_object = DictWriter(metrics_file, fieldnames=field_names)
+            if not file_exists:
+                dictwriter_object.writeheader()
             dictwriter_object.writerow(dict)
             metrics_file.close()
     except Exception as e: