Index: trunk/Mars/mcore/zfits.h
===================================================================
--- trunk/Mars/mcore/zfits.h	(revision 20062)
+++ trunk/Mars/mcore/zfits.h	(revision 20066)
@@ -437,5 +437,5 @@
 
                     std::ostringstream str;
-                    str << "Unkown column ordering scheme found (i=" << i << ", " << fColumnOrdering[i] << ")";
+                    str << "Unkown column ordering scheme found (i=" << i << ", " << int(fColumnOrdering[i]) << ")";
 #ifdef __EXCEPTIONS
                     throw std::runtime_error(str.str());