Court holds that in a void loan contract, interest on default runs from the date of the borrower's formal demand to repay.

The court partially revoked the lower decision regarding interest on a loan contract declared void for lack of legal form. The borrower argued that since the contract was void, no interest could accrue, while the lender contended that default interest should begin upon formal demand. The court ruled that despite the contract's nullity, the obligation to return the principal remains, and thus interest on default legally commences from the date the borrower was formally interpelled to repay.