1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/negate.c b/plugins/negate.c
index 45c03269..8b2dff0e 100644
--- a/plugins/negate.c
+++ b/plugins/negate.c
@@ -189,7 +189,7 @@ process_arguments (int argc, char **argv)
 
                 switch (c) {
                 case '?':     /* help */
-                        usage2 (_("Unknown argument"), optarg);
+                        usage5 ();
                         break;
                 case 'h':     /* help */
                         print_help ();