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-rw-r--r--coreutils/sync.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/coreutils/sync.c b/coreutils/sync.c
index 8f101cf17..f95c24c6c 100644
--- a/coreutils/sync.c
+++ b/coreutils/sync.c
@@ -23,6 +23,7 @@
#include "busybox.h"
#include <stdio.h>
+#include <unistd.h>
extern int sync_main(int argc, char **argv)
{