1 files changed, 1 insertions, 1 deletions

diff --git a/util-linux/flock.c b/util-linux/flock.c
index 78b1e4ba3..be3d552fa 100644
--- a/util-linux/flock.c
+++ b/util-linux/flock.c
@@ -40,7 +40,7 @@ int flock_main(int argc UNUSED_PARAM, char **argv)
                         bb_perror_msg_and_die("can't open '%s'", argv[0]);
                 //TODO? close_on_exec_on(fd);
         } else {
-                fd = xatoi_u(argv[0]);
+                fd = xatoi_positive(argv[0]);
         }
         argv++;