Index: usr.bin/flock/flock.c
===================================================================
RCS file: /cvsroot/src/usr.bin/flock/flock.c,v
retrieving revision 1.11
diff -p -u -r1.11 flock.c
--- usr.bin/flock/flock.c	18 Aug 2014 09:16:35 -0000	1.11
+++ usr.bin/flock/flock.c	4 Oct 2019 11:10:32 -0000
@@ -231,8 +231,6 @@ main(int argc, char *argv[])
 		break;
 
 	default:
-		if ((lock & LOCK_NB) == LOCK_UN)
-			usage("Unlock is only valid for descriptors");
 		if (strcmp(argv[1], "-c") == 0 ||
 		    strcmp(argv[1], "--command") == 0) {
 			if (argc == 2)