The invention provides a new polymorph of 1-(2-methyl-4-(2,3,4,5-tetrahydro-1-benzazepin-1-ylcarbonyl)benzylcarbamoyl)-L-proline-N,N-dimethylamide, pharmaceutical compositions containing it and its use in therapy.Linvention concerne un nouveau polymorphe de 1-(2-méthyl-4-(2,3,4,5-tétrahydro-1-benzazépin-1-ylcarbonyl)benzylcarbamoyl)-L-proline-N,N-diméthylamide, des compositions pharmaceutiques le contenant et son utilisation en thérapie.