1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_snmp.c b/plugins/check_snmp.c
index 1e1657b4..d9e00782 100644
--- a/plugins/check_snmp.c
+++ b/plugins/check_snmp.c
@@ -444,7 +444,7 @@ process_arguments (int argc, char **argv)
 
                 switch (c) {
                 case '?':       /* usage */
-                        usage2 (_("Unknown argument"), optarg);
+                        usage5 ();
                 case 'h':       /* help */
                         print_help ();
                         exit (STATE_OK);