Provided is a phosphate salt of quinuclidin-4-ylmethyl 4-methyl-1H-indole-3- carboxylate, in particular polymorphic Form A, a process for their preparation of said salt, in particular in polymorphic Form A, and a pharmaceutical composition containing said salt.Linvention concerne un sel de phosphate de quinuclidin-4-ylméthyl 4-méthyl-1H-indole-3-carboxylate, en particulier la forme A polymorphe, un procédé de préparation dudit sel, en particulier la forme A polymorphe, et une composition pharmaceutique contenant ledit sel.