diff --git a/mlprec/mld_z_umf_solver.f90 b/mlprec/mld_z_umf_solver.f90
index c058942f..8011e788 100644
--- a/mlprec/mld_z_umf_solver.f90
+++ b/mlprec/mld_z_umf_solver.f90
@@ -49,12 +49,8 @@ module mld_z_umf_solver
   use mld_z_prec_type
 
   type, extends(mld_z_base_solver_type) :: mld_z_umf_solver_type
-!!$    type(psb_dspmat_type)       :: l, u
-!!$    real(psb_dpk_), allocatable :: d(:)
     type(c_ptr)                 :: symbolic=c_null_ptr, numeric=c_null_ptr
     integer(c_long_long)        :: symbsize=0, numsize=0
-!!$    integer                     :: fact_type, fill_in
-!!$    real(psb_dpk_)              :: thresh
   contains
     procedure, pass(sv) :: build => z_umf_solver_bld
     procedure, pass(sv) :: apply => z_umf_solver_apply
@@ -231,7 +227,7 @@ contains
       nrow_a = acsc%get_nrows()
       nztota = acsc%get_nzeros()
       ! Fix the entres to call C-base UMFPACK. 
-      acsc%ia(:)  = acsc%ia(:) - 1
+      acsc%ia(:)  = acsc%ia(:)  - 1
       acsc%icp(:) = acsc%icp(:) - 1
       info = mld_zumf_fact(nrow_a,nztota,acsc%val,&
            & acsc%ia,acsc%icp,sv%symbolic,sv%numeric,&
diff --git a/mlprec/mld_zmlprec_bld.f90 b/mlprec/mld_zmlprec_bld.f90
index bf9446e6..eb9fbed8 100644
--- a/mlprec/mld_zmlprec_bld.f90
+++ b/mlprec/mld_zmlprec_bld.f90
@@ -73,6 +73,7 @@ subroutine mld_zmlprec_bld(a,desc_a,p,info)
   use mld_z_as_smoother
   use mld_z_diag_solver
   use mld_z_ilu_solver
+  use mld_z_umf_solver
 
   Implicit None
 
@@ -358,6 +359,8 @@ subroutine mld_zmlprec_bld(a,desc_a,p,info)
            & p%precv(i)%prec%rprcparm(mld_sub_iluthrs_),info)
     case(mld_diag_scale_)
       allocate(mld_z_diag_solver_type :: p%precv(i)%sm%sv, stat=info)
+    case(mld_umf_)
+      allocate(mld_z_umf_solver_type :: p%precv(i)%sm%sv, stat=info)
     case default
       info = -1 
     end select