sytrd is not recognized by lapack90

Hi, 

I am trying to use LAPACK's "sytrd" subroutine in my code, but it is not recognized. I am trying the following simple code:

program comp
USE mkl95_lapack
USE mkl95_PRECISION
USE mkl95_BLAS
implicit none
real, dimension(2,2) :: A
integer, dimension(1) :: t
A = reshape((/-5., 2., 2., -2./),(/2,2/))
call sytrd(A, t)
end program comp

This is the error I get:

error #6285: There is no matching specific subroutine for this generic subroutine call.   [SYTRD]      

But when I use another of LAPACK's subroutines like "getrf", everything's fine:

program comp
USE mkl95_lapack
USE mkl95_PRECISION
USE mkl95_BLAS
implicit none
real, dimension(2,2) :: A
integer, dimension(2) :: t
A = reshape((/-5., 2., 2., -2./),(/2,2/))
call getrf(A, t)
end program comp

What might cause this problem?