diff --git a/LHCbG4Tests/G4GammaToDiLeptonConversionTest/scripts/G4GammaToDiLeptonConversionTest.py b/LHCbG4Tests/G4GammaToDiLeptonConversionTest/scripts/G4GammaToDiLeptonConversionTest.py
index a3af22003ec69fed34c9f9f2ed603d6522b18f91..85d632f68c002ddbccb88e772143ae25f13ad874 100644
--- a/LHCbG4Tests/G4GammaToDiLeptonConversionTest/scripts/G4GammaToDiLeptonConversionTest.py
+++ b/LHCbG4Tests/G4GammaToDiLeptonConversionTest/scripts/G4GammaToDiLeptonConversionTest.py
@@ -1,3 +1,6 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
 import subprocess
 import argparse