diff --git a/tests/regressions.py b/tests/regressions.py
index 70c03586..3248e0da 100644
--- a/tests/regressions.py
+++ b/tests/regressions.py
@@ -1,4 +1,5 @@
 #!/usr/bin/python2 -O
+# coding=utf-8
 
 #
 # The Qubes OS Project, https://www.qubes-os.org/