diff --git a/scripts/checkTrackSelection.py b/scripts/checkTrackSelection.py
index 505c5ea..1b6a135 100644
--- a/scripts/checkTrackSelection.py
+++ b/scripts/checkTrackSelection.py
@@ -3,7 +3,7 @@
 # @Author: Elena Graverini
 # @Date:   2015-10-27 18:26:49
 # @Last Modified by:   Elena Graverini
-# @Last Modified time: 2017-05-03 14:06:04
+# @Last Modified time: 2017-05-03 14:08:02
 
 import ROOT as r
 import os
@@ -80,8 +80,8 @@
     f = r.TFile(location[det] + '%s.root' % fill, 'read')
     t_sig = f.Get('STADCTrackMonitor/HitInfo/%s' % layer[det])
     t_sig.Draw("val%s>>hsig(110,-35, 75)" % val[det], "odinStep==%s" % step, "ap", stat, 0)
-    c = r.TCanvas()
     h_sig = r.gPad.GetPrimitive('hsig')
+    c = r.TCanvas()
     h_sig.Draw('ap')
     h_sig.GetXaxis().SetTitle('Signal height [ADC value]')
     h_sig.GetYaxis().SetTitle('Hits / ADC value')