diff --git a/lib/krb5/prompter_posix.c b/lib/krb5/prompter_posix.c
index 399372df8..e2226aee0 100644
--- a/lib/krb5/prompter_posix.c
+++ b/lib/krb5/prompter_posix.c
@@ -50,7 +50,7 @@ krb5_prompter_posix (krb5_context context,
     int i;
 
     if (banner)
-	printf ("%s", banner);
+	fprintf (stderr, "%s\n", banner);
     for (i = 0; i < num_prompts; ++i) {
 	if (prompts[i].hidden) {
 	    if(des_read_pw_string(prompts[i].reply->data,