Index: trunk/MagicSoft/Mars/mbase/MLog.h
===================================================================
--- trunk/MagicSoft/Mars/mbase/MLog.h	(revision 5715)
+++ trunk/MagicSoft/Mars/mbase/MLog.h	(revision 5720)
@@ -8,4 +8,6 @@
 #include <TString.h>
 #endif
+
+#include <TSystem.h>
 
 #include <iostream>  // base classes for MLog