diff --git a/elettratest.py b/elettratest.py
index ee026ae6766b217c7fb15b0fc8641ac0d34c501a..2226f3da410553b1946e9b406499c1bfdc101e92 100755
--- a/elettratest.py
+++ b/elettratest.py
@@ -3,7 +3,7 @@
 import at
 import matplotlib.pylab as mp
 
-ring=at.load_lattice("../../machine/lattice/elettra/elettra_strS.m",energy=2.0e9)
+ring=at.load_lattice("../../machine/lattice/elettra/elettra_strS4.m",energy=2.4e9)
 
 refpts = range(len(ring) + 1)
 ring.radiation_off()