  An averaging result is proved for stochastic evolution equations with highly
oscillating coefficients. This result applies in particular to equations with
almost periodic coefficients. The convergence to the solution of the averaged
equation is obtained in distribution, as in previous works by Khasminskii and
Vrko{\v c}.This version corrects two minor errors from our paper published in
J. Math. Anal. Appl. 427(1):336--364, 2015.
