Index: trunk/Ohana/src/opihi/dvo/imdense.c
===================================================================
--- trunk/Ohana/src/opihi/dvo/imdense.c	(revision 7680)
+++ trunk/Ohana/src/opihi/dvo/imdense.c	(revision 7917)
@@ -14,5 +14,5 @@
   /* also, option to list and not plot or plot and not list images */
   if (argc != 1) {
-    fprintf (stderr, "USAGE: image\n");
+    gprint (GP_ERR, "USAGE: image\n");
     return (FALSE);
   }