diff --git a/elettra2test.py b/elettra2test.py
index 10a9effb41086ff9d4cdde0b837e9af1e3372a81..cbd0cf2674acf4da3c816f61fe180ee792d0ea57 100755
--- a/elettra2test.py
+++ b/elettra2test.py
@@ -1,9 +1,11 @@
 #!/usr/bin/python3
-
+import os
 import at
 import matplotlib.pylab as mp
-
-ring=at.load_lattice("../../machine/lattice/elettra2/srElettra2_9_4_beta.mat",energy=2.4e9)
+lattfile = "../../machine/lattice/elettra2/srElettra2_9_4_beta.mat"
+#lattfile = "~/esrf_visit/last.mat"
+lattfile = os.path.expanduser(lattfile)
+ring=at.load_lattice(lattfile, energy=2.4e9)
 
 refpts = range(len(ring) + 1)
 ring.radiation_off()