diff --git a/scripts/checkTrackSelection.py b/scripts/checkTrackSelection.py
index e3bc983..0db4155 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 10:59:41
+# @Last Modified time: 2017-05-03 11:00:49
 
 import ROOT as r
 import os
@@ -73,7 +73,7 @@
 def putLine(c, det):
     line = r.TLine()
     line.SetLineWidth(4)
-    line.SetLineColor(kWhite)
+    line.SetLineColor(r.kWhite)
     c.cd()
     if 'TT' in det:
         line.DrawLine(0.0, 0.01, 1.6, 0.16)