Index: trunk/Ohana/src/opihi/cmd.data/vsmooth.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/vsmooth.c	(revision 3893)
+++ trunk/Ohana/src/opihi/cmd.data/vsmooth.c	(revision 7917)
@@ -16,5 +16,5 @@
 
   if (argc != 3) {
-    fprintf (stderr, "USAGE: vsmooth (input) sigma\n");
+    gprint (GP_ERR, "USAGE: vsmooth (input) sigma\n");
     return (FALSE);
   }