  Let $p$ be a prime number, $k$ an algebraically closed field of
characteristic $p$, $\tilde{G}$ a finite group, and $G$ a normal subgroup of
$\tilde{G}$ having a $p$-power index in $\tilde{G}$. Moreover let $B$ be a
block of $kG$ with a cyclic defect group and $\tilde{B}$ be the unique block of
$k\tilde{G}$ covering $B$. We study tilting complexes over the block
$\tilde{B}$ and show that the block $\tilde{B}$ is a tilting-discrete algebra.
Moreover we show that the set of all tilting complexes over $\tilde{B}$ is
isomorphic to that over $B$ as partially ordered sets.
