Index: trunk/Ohana/src/opihi/cmd.data/concat.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/concat.c	(revision 2598)
+++ trunk/Ohana/src/opihi/cmd.data/concat.c	(revision 7917)
@@ -10,6 +10,6 @@
   /** check basic syntax **/
   if (argc != 3) {
-    fprintf (stderr, "SYNTAX: concat (vector/value) vector\n");
-    fprintf (stderr, "  concatanate (vector/value) to vector\n");
+    gprint (GP_ERR, "SYNTAX: concat (vector/value) vector\n");
+    gprint (GP_ERR, "  concatanate (vector/value) to vector\n");
     return (FALSE);
   }