--- default.c.orig	2006-12-26 17:07:19.000000000 +0200
+++ default.c	2006-12-26 17:07:56.000000000 +0200
@@ -63,11 +63,11 @@
 
               if ((++i) % 4 == 0)
                 {
-                  putchar ('\n');
+                  fputc ('\n', stderr);
                 }
             }
 
-          putchar ('\n');
+          fputc ('\n', stderr);
 
           GSL_ERROR_VAL ("unknown generator", GSL_EINVAL, 0);
         }