  This paper is concerned with the representation theory of finite groups.
According to Robinson, the truth of certain variants of Alperin's weight
conjecture on the $p$-blocks of a finite group would imply some arithmetical
conditions on the degrees of the irreducible (complex) characters of that
group. The purpose of this note is to prove directly that one of these
arithmetical conditions is true in the case where we consider a finite group of
Lie type in good characteristic.
