diff --git a/nmap-update/nmap-update.c b/nmap-update/nmap-update.c
index d6e78cda6..08b59ae1d 100644
--- a/nmap-update/nmap-update.c
+++ b/nmap-update/nmap-update.c
@@ -1104,7 +1104,7 @@ static int rename_file(const char *from_filename, const char *to_filename)
 
 	/* Windows rename doesn't remove the destination if it exists. */
 	errno = 0;
-	rc = unlink(to_filename);
+	rc = _unlink(to_filename);
 	if (rc == -1 && errno != ENOENT)
 		return -1;