As an old quote from DanielLC says, consequentialism is "the belief that doing the right thing makes the world a better place". I now present some finger exercises on the topic:

It seems like it would be more aptly defined as "the belief that making the world a better place constitutes doing the right thing". Non-consequentialists can certainly believe that doing the right thing makes the world a better place, especially if they don't care whether it does.