Index: trunk/MagicSoft/Mars/manalysis/MHillasExt.cc
===================================================================
--- trunk/MagicSoft/Mars/manalysis/MHillasExt.cc	(revision 1218)
+++ trunk/MagicSoft/Mars/manalysis/MHillasExt.cc	(revision 1220)
@@ -41,4 +41,5 @@
 
 #include <fstream.h>
+#include <math.h>
 
 #include "MGeomPix.h"