  A subgroup $H$ of a group $G$ is called {\it pronormal}, if for every $g\in
G$ subgroups $H$ and $H^g$ are conjugate in $\langle H, H^g\rangle$. It is
proven that if a finite group $G$ possesses a $\pi$-Hall subgroup for a set of
primes $\pi$, the every its normal subgroup (in particular, $G$ itself)
possesses a $\pi$-Hall subgroup that is pronormal in~$G$.
