diff --git a/framework/k4SimDelphes/examples/options/k4simdelphesalg_pythia.py b/framework/k4SimDelphes/examples/options/k4simdelphesalg_pythia.py
index b703a328..80e75056 100644
--- a/framework/k4SimDelphes/examples/options/k4simdelphesalg_pythia.py
+++ b/framework/k4SimDelphes/examples/options/k4simdelphesalg_pythia.py
@@ -1,5 +1,5 @@
 from Gaudi.Configuration import *
-from GaudiKernel import SystemOfUnits as units
+import os
 
 from Configurables import ApplicationMgr
 app = ApplicationMgr()