[Wien] Question on SRC_kram

[whoming]

Dear WIEN2K users,
        I have read the source code of SRC_kram/kram.f(WIEN2K_03).
I am puzzled by two lines in it:
When doing KK without broadening, the sig(i,j) is calculated by:
       sig(i,j)=-iimag*sigfac*eps(i,j)*xe(i)

But when doing KK with broadening, the sig(i,j) is:
      sig(i,j)=sigfac*eps(i,j)*xe(i)

Would you please help me to understand this difference?And which one
is OK?
Thank you very much!

Yours,
whoming