diff --git a/NPLib/MUST2/TMust2Spectra.cxx b/NPLib/MUST2/TMust2Spectra.cxx
index eb3fbb5cad4197eafe78b5c91311c3a5e18557a8..62d1b83e58d62d8d07b04a4ba20a3e6f163b25ce 100644
--- a/NPLib/MUST2/TMust2Spectra.cxx
+++ b/NPLib/MUST2/TMust2Spectra.cxx
@@ -650,8 +650,8 @@ void TMust2Spectra::WriteHisto(TString filename){
 void TMust2Spectra::CheckSpectra(){
 map< vector<TString>, TH1* >::iterator it;
   Color_t ok_color = kTeal+9;
-  Color_t warning_color = kOrange+8;
-  Color_t bad_color = kRed;
+  Color_t warning_color = kOrange+8;   warning_color *= 1;
+  Color_t bad_color = kRed;            bad_color *= 1;
 
   for (it=fMapHisto.begin(); it!=fMapHisto.end(); ++it){
     it->second->SetLineColor(ok_color);