Index: trunk/Mars/mgui/MHexagon.h
===================================================================
--- trunk/Mars/mgui/MHexagon.h	(revision 12928)
+++ trunk/Mars/mgui/MHexagon.h	(revision 14447)
@@ -72,6 +72,6 @@
     virtual void  PaintHexagon(Float_t x, Float_t y, Float_t d, Float_t phi=0);
     virtual void  Print(Option_t *Option="") const; // *MENU*
-    virtual void  SavePrimitive(ostream &out, Option_t *);
-    virtual void  SavePrimitive(ofstream &out, Option_t *);
+    virtual void  SavePrimitive(std::ostream &out, Option_t *);
+    virtual void  SavePrimitive(std::ofstream &out, Option_t *);
 
     Float_t GetX() const { return fX; }