1 files changed, 1 insertions, 1 deletions

diff --git a/coreutils/sync.c b/coreutils/sync.c
index d562f3fc5..9dbdd98aa 100644
--- a/coreutils/sync.c
+++ b/coreutils/sync.c
@@ -13,7 +13,7 @@
 
 /* This is a NOFORK applet. Be very careful! */
 
-int sync_main(int argc, char **argv);
+int sync_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int sync_main(int argc, char **argv)
 {
         bb_warn_ignoring_args(argc - 1);