Index: /trunk/Mars/mhbase/MHMatrix.h
===================================================================
--- /trunk/Mars/mhbase/MHMatrix.h	(revision 19252)
+++ /trunk/Mars/mhbase/MHMatrix.h	(revision 19253)
@@ -2,6 +2,12 @@
 #define MARS_MHMatrix
 
+#ifndef ROOT_TROOT
+#include <TROOT.h>
+#endif
+
+#if ROOT_VERSION_CODE < ROOT_VERSION(6,00,00)
 #ifdef MARS_MLogManip
 #error Please make ensure that MLogManip.h are included _after_ MHMatrix.h
+#endif
 #endif