diff --git a/NPAnalysis/macros/GeometricalEfficiency.C b/NPAnalysis/macros/GeometricalEfficiency.C
index eeba65617a2f578aa8ed2fafdbbac8cac9990f46..843843e63dc4bc81ac2ce3d4080fc581be289048 100644
--- a/NPAnalysis/macros/GeometricalEfficiency.C
+++ b/NPAnalysis/macros/GeometricalEfficiency.C
@@ -110,7 +110,7 @@ void GeometricalEfficiency(const char * fname = "myResult"){
   c4->SetTopMargin(0.01);
   c4->SetRightMargin(0.03);
   TH1F* SolidACM = new TH1F(*hDetecThetaCM);
- //// SolidACM->Sumw2();
+  SolidACM->Sumw2();
   TF1* C = new TF1("C",Form("1. /(2*%f*sin(x*%f/180.)*1*%f/180)",M_PI,M_PI,M_PI),0,180);
   SolidACM->Divide(hEmittThetaCM);
   SolidACM->Divide(C,1);