--- a/src/bin/pg_rewind/t/003_extrafiles.pl
+++ b/src/bin/pg_rewind/t/003_extrafiles.pl
@@ -53,6 +53,9 @@ sub run_test
    append_to_file
      "$test_standby_datadir/tst_standby_dir/standby_subdir/standby_file4",
      "in standby4";
+   append_to_file
+     "$test_standby_datadir/tst_standby_dir/.DS_Store",
+     "in standby4";