Any change during the term of the contract, either to what was agreed when the contract was taken out, or to the insured object, which results in a significant increase in the risk, shall result in cancellation of the insurance if it has not been notified to the insurer within three days of the insured becoming aware of it, excluding public holidays, unless the insured provides proof of good faith, in which case the provisions of the second paragraph of article L. 172-2 shall apply.
If this increase is not the fault of the insured, the insurance continues, subject to an increase in the premium corresponding to the increase that has occurred.
If the worsening is the fault of the insured, the insurer may either cancel the contract within three days of becoming aware of the worsening, forfeiting the premium, or demand a premium increase corresponding to the worsening.