diff --git a/Reconstruction/egamma/egammaValidation/scripts/EgammaARTmonitoring_plotsMaker.py b/Reconstruction/egamma/egammaValidation/scripts/EgammaARTmonitoring_plotsMaker.py
index 3752d43c5671de84fcb57b1a6e910e5b6f34547c..2e2f93a332ede66dddfd0dfeb2573f732550183a 100755
--- a/Reconstruction/egamma/egammaValidation/scripts/EgammaARTmonitoring_plotsMaker.py
+++ b/Reconstruction/egamma/egammaValidation/scripts/EgammaARTmonitoring_plotsMaker.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 #
 # Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration.
 #