diff --git a/test/test_function_buzzer.py b/test/test_function_buzzer.py
index eb98613..de16e89 100644
--- a/test/test_function_buzzer.py
+++ b/test/test_function_buzzer.py
@@ -15,8 +15,16 @@ def test_buzzer_function_with_default_params():
 @pytest.mark.parametrize(
     "times, duration",
     [
-        [1, 1], [2, 2], [3, 3], [4, 4], [5, 5], [6, 6], [7, 7], [8, 8], [9, 9],
-    ]
+        [1, 1], 
+        [2, 2], 
+        [3, 3], 
+        [4, 4], 
+        [5, 5], 
+        [6, 6], 
+        [7, 7], 
+        [8, 8], 
+        [9, 9],
+    ],
 )
 def test_buzzer_function(times, duration):
     instance = printer.Dummy()