Index: trunk/MagicSoft/Mars/mtemp/mifae/library/MFHVNotNominal.cc
===================================================================
--- trunk/MagicSoft/Mars/mtemp/mifae/library/MFHVNotNominal.cc	(revision 3986)
+++ trunk/MagicSoft/Mars/mtemp/mifae/library/MFHVNotNominal.cc	(revision 3999)
@@ -45,4 +45,6 @@
 #include <stdlib.h>
 
+#include <TMath.h>
+
 #include "MLog.h"
 #include "MLogManip.h"
@@ -190,5 +192,5 @@
       Double_t hv = (*fHV)[idx];
       Double_t nominal = fHVNominal[idx];
-      Double_t dev = 2.*abs(nominal-hv)/(nominal+hv);
+      Double_t dev = 2.*TMath::Abs(nominal-hv)/(nominal+hv);
       
       if (dev > fMaxHVDeviation)