The present invention relates to the field of perfumery. More particularly, it concerns some acetal derivatives of 3-methyl citral of formula (I) wherein the dotted lines indicate the presence of a single or double bond R1 represents a hydrogen atom or a methyl or ethyl group, R2 represents a hydrogen atom or methyl group and each R3, taken alone, simultaneously or independently, represents a C1-3 alkyl or alkenyl group or said R3 groups, taken together, represent a C2-6 hydrocarbon group optionally comprising an oxygen atom. The present invention concerns the use of said compounds in the perfumery industry as well as the compositions or articles containing said compounds.