Index: trunk/FACT++/src/fitsdump.cc
===================================================================
--- trunk/FACT++/src/fitsdump.cc	(revision 18488)
+++ trunk/FACT++/src/fitsdump.cc	(revision 18489)
@@ -984,5 +984,5 @@
     if (!fout)
     {
-        cerr << "Cannot open file " << filename << ": " << strerror(errno) << endl;
+        cerr << "Cannot open output stream " << filename << ": " << strerror(errno) << endl;
         return false;
     }