diff --git a/tests/run_multiple_tests.py b/tests/run_multiple_tests.py
index 5bf1a0b8..ee46f131 100755
--- a/tests/run_multiple_tests.py
+++ b/tests/run_multiple_tests.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 
 """
 Test script, for testing different situations, like:
diff --git a/tests/run_playlist.py b/tests/run_playlist.py
index 3579ba4e..e68ea54d 100755
--- a/tests/run_playlist.py
+++ b/tests/run_playlist.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 
 import datetime
 import os
diff --git a/tests/run_time_machine.py b/tests/run_time_machine.py
index 94a2ed00..5ce822be 100755
--- a/tests/run_time_machine.py
+++ b/tests/run_time_machine.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 
 """
 Test script, for simulating different date and time.
diff --git a/tests/run_time_warp.py b/tests/run_time_warp.py
index 17f2ee97..06501317 100755
--- a/tests/run_time_warp.py
+++ b/tests/run_time_warp.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 
 """
 Test script, for simulating speed up the clock.