diff --git a/src/definitions.h b/src/definitions.h
index 2a30f5b..829e29f 100644
--- a/src/definitions.h
+++ b/src/definitions.h
@@ -38,7 +38,7 @@ class NLO_weights{
 // ==============================================
 double bbtagCut = 0.4;
 TFile* puWeightFile = new TFile("../data/PileupHistograms_0121_69p2mb_pm4p6.root");
-TH1F* puWeightHist = (TH1F*) puWeightFile->Get("pu_weights_central");
+TH1F* puWeightHist = (TH1F*) puWeightFile->Get("pu_weights_down");
 NLO_weights NLOw;
 // ==============================================