1 files changed, 1 insertions, 1 deletions
diff --git a/apps/req.c b/apps/req.c
index fb37f7dfec..8ebe1eca6d 100644
--- a/apps/req.c
+++ b/apps/req.c
@@ -296,7 +296,7 @@ int req_main(int argc, char **argv)
             break;
         case OPT_SET_SERIAL:
             if (serial != NULL) {
-                /* Cannot be supplied twice */
+                BIO_printf(bio_err, "Serial number supplied twice\n");
                 goto opthelp;
             }
             serial = s2i_ASN1_INTEGER(NULL, opt_arg());