In one embodiment, the stacked package includes a first chip disposed over a package substrate. The first chip has at least one first chip dummy pad, and the first chip dummy pad is not electrically connected to circuits of the first chip. A first dummy bonding wire is connected to the first chip dummy pad and the package substrate. A second chip is disposed over at least a portion of the first chip, and the second chip has at least one second chip bonding pad. A first bonding wire is electrically connected to the second chip bonding pad and the first dummy bonding wire.