1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_nagios.c b/plugins/check_nagios.c
index a6ae71f2..5703e606 100644
--- a/plugins/check_nagios.c
+++ b/plugins/check_nagios.c
@@ -258,7 +258,7 @@ process_arguments (int argc, char **argv)
                         verbose++;
                         break;
                 default:                                                                        /* print short usage_va statement if args not parsable */
-                        usage_va(_("Unknown argument - %s"), optarg);
+                        usage5();
                 }
         }