https://www.commonlii.org/uk/cases/EngR/1220/

CASE XXXVIII. Mich. 13 Jac. B. R.

Furrer versus Snelling, Dyer, 55. Covenant, Debt, Miscasting. Superflua non nocent. Yel. 5.

Covenant for payment of rent of £20. per annum, for four years and an half; and for non-payment of £100. according to the said covenant, the action is brought: adjudged good, and affirmed in error: for in covenant damages only are to be recovered; and this surplus in miscomputing shall be abated: it is otherwise in debt for rent, where more is demanded than is due; for in this case the debt demanded only, is to be recovered.