1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_nt.c b/plugins/check_nt.c
index 44203dbc..fe47a58b 100644
--- a/plugins/check_nt.c
+++ b/plugins/check_nt.c
@@ -492,7 +492,7 @@ int process_arguments(int argc, char **argv){
                 switch (c)
                         {
                         case '?': /* print short usage statement if args not parsable */
-                        usage2 (_("Unknown argument"), optarg);
+                        usage5 ();
                         case 'h': /* help */
                                 print_help();
                                 exit(STATE_OK);