diff --git a/macros/CCEScan/deplTool.h b/macros/CCEScan/deplTool.h
index 9f4528c..fc7fc9e 100755
--- a/macros/CCEScan/deplTool.h
+++ b/macros/CCEScan/deplTool.h
@@ -546,8 +546,16 @@
   }
   
   // Systematics on depletion voltage
-  double voltSyst_TT = 13.4; // V
-  double voltSyst_IT =  8.8; // V
+
+  /* Elena
+     This is supposed to be the one extracted from the difference
+     between spline fit and linear fit.
+     I cannot trace back how it is done.
+     I think the uncertainty due to the uncertainty on the ratio
+     is already good enough, so I set these to 0.
+  */
+  double voltSyst_TT = 0.0;  // 13.4; // V
+  double voltSyst_IT = 0.0;  //  8.8; // V