Index: trunk/Mars/mtools/MChisqEval.h
===================================================================
--- trunk/Mars/mtools/MChisqEval.h	(revision 9868)
+++ trunk/Mars/mtools/MChisqEval.h	(revision 14447)
@@ -27,5 +27,5 @@
     Double_t     fSumW;    //! Sum of weights
 
-    void StreamPrimitive(ostream &out) const;
+    void StreamPrimitive(std::ostream &out) const;
 
     enum { kIsOwner = BIT(14) };