The invention relates to a modified V2 fHbp having increased stability over a wild type V2 fHbp; a modified V2 fHbp having an amino acid sequence with at least 85% identity to the sequence of Seq ID No: 1, wherein both Ser137 and Gly138 are mutated or both Val112 and Leu114 are mutated; immunogenic, pharmaceutical and vaccine compositions; nucleic acid and a host cell; and methods of use of such compositions.