Abstract: A paper or cardboard coating composition having a dry matter content of between 45% and 80%, comprising i) binders which include at least one modified starch and one adhesive, ii) a hydrolyzed wheat protein having an average molecular weight of between 7 and 1000 kDa, and iii) a mineral filler, and also the method for obtaining such a composition. A method for coating or brightening paper or cardboard, comprising the steps consisting of i) the provision of a composition as described, and ii) the depositing of said composition on a paper or cardboard substrate, and to the coated paper or cardboard thus obtained. Finally, the use of a hydrolyzed wheat protein in the replacement of latex in a paper or cardboard coating composition.