diff --git a/macros/CCEScan/voltageFit_spline.C b/macros/CCEScan/voltageFit_spline.C
index fad064b..658dfc2 100755
--- a/macros/CCEScan/voltageFit_spline.C
+++ b/macros/CCEScan/voltageFit_spline.C
@@ -308,16 +308,18 @@
   
   
   // Extract the ratio values for the sampling point
-  TVectorD* vp_ratio    = (TVectorD*)f_ratio->Get(Form("v_ratio_%s",lay.Data()));
-  TVectorD* vp_secRatio = (TVectorD*)f_ratio->Get(Form("v_sector_%s",lay.Data()));
+  TVectorD* vp_ratio     = (TVectorD*)f_ratio->Get(Form("v_ratio_%s",lay.Data()));
+  TVectorD* vp_ratio_err = (TVectorD*)f_ratio->Get(Form("v_ratio_err_%s",lay.Data()));
+  TVectorD* vp_secRatio  = (TVectorD*)f_ratio->Get(Form("v_sector_%s",lay.Data()));
   
-  if (!vp_ratio || !vp_secRatio) {
+  if (!vp_ratio || !vp_secRatio || !vp_ratio_err) {
     Error("voltageFit_spline","Ratio vectors not available");
     Printf("=========================================\n");
     return EXIT_FAILURE;
   }
   
   TVectorD v_ratio      = *vp_ratio;
+  TVectorD v_ratio_err  = *vp_ratio_err;
   TVectorD v_secRatio   = *vp_secRatio;
   
   TF1* fu_volt = STTool::Constfunc;
@@ -330,12 +332,16 @@
     ratio_err = STTool::TTratio_err;
   }
   
-  // Using ratio per bin
-  if (false && det.EqualTo("TT")) {
+  /* Elena
+  // if (false && det.EqualTo("TT")) {
+  */
+  // Using ratio per sector
+  if (true) {
     int ratioInd = getClosestIndex<double>(v_secRatio,(double)sector);
     if (!(ratioInd<0) && (int)v_secRatio(ratioInd)==sector && true) {
       Info("voltageFit_spline","Using specific ratio for sector %d",sector);
       ratio_val  = v_ratio(ratioInd);
+      ratio_err  = v_ratio_err(ratioInd);
     }
   }