diff --git a/dmesg.c b/dmesg.c
index d020f77..f9f77ea 100644
--- a/dmesg.c
+++ b/dmesg.c
@@ -19,7 +19,7 @@ enum {
 static void
 usage(void)
 {
-	eprintf("usage: [-Ccr] %s\n", argv0);
+	eprintf("usage: [-Ccnr] %s\n", argv0);
 }
 
 int