Index: trunk/MagicSoft/Mars/manalysis/MSourcePosfromStarPos.cc
===================================================================
--- trunk/MagicSoft/Mars/manalysis/MSourcePosfromStarPos.cc	(revision 3598)
+++ trunk/MagicSoft/Mars/manalysis/MSourcePosfromStarPos.cc	(revision 3599)
@@ -715,5 +715,5 @@
 
     // run number must be greater than 10000
-    if (fabs(ival) < 10000)
+    if (TMath::Abs(ival) < 10000)
     {
       *fLog << err << "===========> Error when reading file with theta and phi <========="