Soucek has twice proved the matchwinner this past week.
Moyes said, "I'm really pleased with Tomas' goalscoring form.
"More importantly, his goals have been so important too. We needed somebody to step up and Tomas has been doing it right now.
"He scored a good number of goals in his first season here, and last season was a little bit quieter, but he's back on it now which is really good for us."