Let
G
G
be a connected reductive group, defined over a local, non-archimedean field
k
k
. The group
G
(
k
)
G(k)
is locally compact and unimodular. In On the motive of a reductive group, Invent. Math. 130 (1997), by B. H. Gross, a Haar measure
|
ω
G
|
|\omega _G|
was defined on
G
(
k
)
G(k)
, using the theory of Bruhat and Tits. In this note, we give another construction of the measure
|
ω
G
|
|\omega _G|
, using the Artin conductor of the motive
M
M
of
G
G
over
k
k
. The equivalence of the two constructions is deduced from a result of G. Prasad.