1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_apt.c b/plugins/check_apt.c
index 902b455f..f67ebf9b 100644
--- a/plugins/check_apt.c
+++ b/plugins/check_apt.c
@@ -201,7 +201,7 @@ int process_arguments (int argc, char **argv) {
                         break;
                 default:
                         /* print short usage statement if args not parsable */
-                        usage_va(_("Unknown argument - %s"), optarg);
+                        usage5();
                 }
         }