  In this note we present an analogue of equivariant formality in $K$-theory
and show that it is equivalent to equivariant formality \emph{\`a la}
Goresky-Kottwitz-MacPherson. We also apply this analogue to give alternative
proofs of equivariant formality of conjugation action on compact Lie groups,
left translation action on generalized flag manifolds, and compact Lie group
actions with maximal rank isotropy subgroups.
