Should I use sut naming convention for unit tests

Some(including me) use the sut(system under test) to name the software being tested in unit tests.

Is this considered a good practice? why/why not?

Example:

[Test]
public void SetClaimUpdatedShouldCallSameMethodOnDependedServices()
{
    //Arrange
    var changedClaimService1 = new Mock<IChangedClaimsService>();
    var changedClaimService2 = new Mock<IChangedClaimsService>();

    var changedClaim = CreateAnyChangedClaim();

    var sut = new ChangedClaimsServiceComposite(
        changedClaimService1.Object,
        changedClaimService2.Object);

    //Act
    sut.SetClaimUpdated(changedClaim);

    //Assert
    changedClaimService1.Verify(x => x.SetClaimUpdated(changedClaim), "changedClaimService1");
    changedClaimService2.Verify(x => x.SetClaimUpdated(changedClaim), "changedClaimService2");
}