Windows: pg_dump doesn't recognize -n option

This is my output on Windows:
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D:\Code>pg_dump -U postgres -d test -n public
pg_dump: too many command-line arguments (first is "-n")
Try "pg_dump --help" for more information.

D:\Code>pg_dump -U postgres -d test --schema=public
pg_dump: too many command-line arguments (first is "--schema=public")
Try "pg_dump --help" for more information.

D:\Code>pg_dump --version
pg_dump (PostgreSQL) 8.3.3
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