Index: trunk/MagicSoft/Mars/datacenter/macros/fillstar.C
===================================================================
--- trunk/MagicSoft/Mars/datacenter/macros/fillstar.C	(revision 8169)
+++ trunk/MagicSoft/Mars/datacenter/macros/fillstar.C	(revision 8170)
@@ -156,4 +156,6 @@
     Float_t psf   = 58.5480*mw - 37.3829;
     psf = TMath::Nint(psf*10)/10.;
+    if (psf<0)
+        psf=0;
     TString PSF = Form("%5.1f", psf);
     Int_t   num = (int)hmuon->GetEntries();