diff --git a/Root/HiggsWeightTool.cxx b/Root/HiggsWeightTool.cxx
index 8825cb9df42818742afbff212cb4b288705790fc..b9da01027e249346499addb19d5132917bafe48f 100644
--- a/Root/HiggsWeightTool.cxx
+++ b/Root/HiggsWeightTool.cxx
@@ -203,6 +203,10 @@ namespace xAOD {
     updateWeights(hw.nominal,hw.pdf4lhc_unc); updateWeights(hw.nominal,hw.nnpdf30_unc);    
   }
 
+  void HiggsWeightTool::updateWeight(const double &w_nom, double &w) {
+    
+  }
+
 
   
   
diff --git a/TruthWeightTools/HiggsWeightTool.h b/TruthWeightTools/HiggsWeightTool.h
index 4022e8625be5cb71dda64c52b0faa0e5842d2e5a..9711a52959bede9c256e22a818967438ffd3ad71 100644
--- a/TruthWeightTools/HiggsWeightTool.h
+++ b/TruthWeightTools/HiggsWeightTool.h
@@ -153,6 +153,9 @@ namespace xAOD {
 
     /// Protect against non-finite or outside-reqired-range weights
     void updateWeights(HiggsWeights &hw);
+    void updateWeight(const double &w_nom, double &w);
+    void updateWeights(const double &w_nom, std::vector<double> &ws) { for (auto &w:ws) updateWeight(w_nom,w); }
+
     
     /// Setup weights
     void setupWeights(size_t Nweights);