1 files changed, 1 insertions, 3 deletions

diff --git a/plugins/check_mrtg.c b/plugins/check_mrtg.c
index bd37aeff..067429cf 100644
--- a/plugins/check_mrtg.c
+++ b/plugins/check_mrtg.c
@@ -233,9 +233,7 @@ process_arguments (int argc, char **argv)
                         print_help ();
                         exit (STATE_OK);
                 case '?':                                                                       /* help */
-                        printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
-                        print_usage ();
-                        exit (STATE_UNKNOWN);
+                        usage2 (_("Unknown argument"), optarg);
                 }
         }