diff --git a/sbin/dumpfs/dumpfs.c b/sbin/dumpfs/dumpfs.c
index 3451bcdafcd..2926d1ad90f 100644
--- a/sbin/dumpfs/dumpfs.c
+++ b/sbin/dumpfs/dumpfs.c
@@ -499,6 +499,6 @@ ufserr(const char *name)
 static void
 usage(void)
 {
-	(void)fprintf(stderr, "usage: dumpfs [-fm] filesys | device\n");
+	(void)fprintf(stderr, "usage: dumpfs [-flm] filesys | device\n");
 	exit(1);
 }