Index: trunk/Mars/mbase/MZlib.h
===================================================================
--- trunk/Mars/mbase/MZlib.h	(revision 11432)
+++ trunk/Mars/mbase/MZlib.h	(revision 11433)
@@ -3,5 +3,5 @@
 
 #ifndef ROOT_TObject
-#include <TObject.h>
+#include <TObject.h> // Needed for ClassDef
 #endif
 
@@ -12,8 +12,7 @@
 #endif
 
-#include <iostream>  // base classes for MLog
-#include <fstream>
+#include <istream>  // base classes for MLog
 
-class MZlib : public std::streambuf, virtual public std::istream, public TObject
+class MZlib : public std::streambuf, public std::istream
 {
 private: