Index: trunk/MagicSoft/Mars/mhbase/MFillH.cc
===================================================================
--- trunk/MagicSoft/Mars/mhbase/MFillH.cc	(revision 3789)
+++ trunk/MagicSoft/Mars/mhbase/MFillH.cc	(revision 3790)
@@ -559,5 +559,5 @@
     if (fDisplay && fDisplay->HasCanvas(fCanvas))
     {
-        const TString opt(Form("nonew %s", fDrawOption));
+        const TString opt(Form("nonew %s", fDrawOption.Data()));
         fCanvas->cd();
         fH->DrawClone(opt);