Evidence of a statement or other disclosure of privileged matter is not admissible against the holder of the privilege if the disclosure was (a) compelled erroneously or (b) made without opportunity to claim the privilege.
Wis. Stat. § 905.12
Privileged matter disclosed under compulsion or without opportunity to claim privilege
Sup
Official source: Wisconsin State Legislature. Reproduced from public-domain Wisconsin statutes; confirm against the official source for the current text. Not legal advice.