P{ey3.5-GAL4.Exel}1 (FBti0040596) was mapped by Annette Parks at the Bloomington Drosophila Stock Center and is a homozygous viable and fertile insertion on the second chromosome.The original correspondence (FBrf0178842) stated P{ey3.5-GAL4.Exel}1 (FBti0040596) mapped to the X chromosome. This error has now been corrected in FBrf0178842.