Index: trunk/MagicSoft/Mars/mhist/MH.cc
===================================================================
--- trunk/MagicSoft/Mars/mhist/MH.cc	(revision 1772)
+++ trunk/MagicSoft/Mars/mhist/MH.cc	(revision 1774)
@@ -485,5 +485,8 @@
     Double_t binhigh =0;
     Double_t binwidth=0;
+
+#if ROOT_VERSION_CODE < ROOT_VERSION(3,03,01)
     TGaxis::Optimize(umin, umax, nbins, binlow, binhigh, nbins, binwidth, "");
+#endif
 
     if (binwidth <= 0 || binwidth > 1.e+39)