diff --git a/src/tc_bi_ortho/test_tc_fock.irp.f b/src/tc_bi_ortho/test_tc_fock.irp.f
index 26446daf..ebd43a7a 100644
--- a/src/tc_bi_ortho/test_tc_fock.irp.f
+++ b/src/tc_bi_ortho/test_tc_fock.irp.f
@@ -15,7 +15,8 @@ program test_tc_fock
   !call routine_2
 !  call routine_3()
 
- call test_3e
+! call test_3e
+ call routine_tot
 end
 
 ! ---
@@ -84,8 +85,8 @@ subroutine routine_3()
         print*, i, a
         stop
        endif
-       !print*, ' excited det'
-       !call debug_det(det_i, N_int)
+       print*, ' excited det'
+       call debug_det(det_i, N_int)
  
        call htilde_mu_mat_bi_ortho(det_i, ref_bitmask, N_int, hmono, htwoe, hthree, htilde_ij)
        if(dabs(hthree).lt.1.d-10)cycle
@@ -116,3 +117,78 @@ subroutine routine_3()
 end subroutine routine_3
 
 ! ---
+subroutine routine_tot()
+
+  use bitmasks ! you need to include the bitmasks_module.f90 features
+
+  implicit none
+  integer                        :: i, a, i_ok, s1,other_spin(2)
+  double precision               :: hmono, htwoe, hthree, htilde_ij
+  double precision               :: err_ai, err_tot, ref, new
+  integer(bit_kind), allocatable :: det_i(:,:)
+
+  allocate(det_i(N_int,2))
+  other_spin(1) = 2
+  other_spin(2) = 1
+
+  err_tot = 0.d0
+ 
+!  do s1 = 1, 2
+   s1 = 2
+   det_i = ref_bitmask
+   call debug_det(det_i, N_int)
+   print*, ' HF det'
+   call debug_det(det_i, N_int)
+ 
+!   do i = 1, elec_num_tab(s1)
+!     do a = elec_num_tab(s1)+1, mo_num ! virtual 
+   do i = 1, elec_beta_num
+     do a = elec_beta_num+1, elec_alpha_num! virtual 
+!   do i = elec_beta_num+1, elec_alpha_num
+!     do a = elec_alpha_num+1, mo_num! virtual 
+       print*,i,a 
+ 
+       det_i = ref_bitmask
+       call do_single_excitation(det_i, i, a, s1, i_ok)
+       if(i_ok == -1) then
+        print*, 'PB !!'
+        print*, i, a
+        stop
+       endif
+ 
+       call htilde_mu_mat_bi_ortho(det_i, ref_bitmask, N_int, hmono, htwoe, hthree, htilde_ij)
+       print*,htilde_ij
+       if(dabs(htilde_ij).lt.1.d-10)cycle
+       print*, ' excited det'
+       call debug_det(det_i, N_int)
+
+       if(s1 == 1)then
+        new = Fock_matrix_tc_mo_alpha(a,i)
+       else
+        new = Fock_matrix_tc_mo_beta(a,i)
+       endif
+       ref = htilde_ij
+!       if(s1 == 1)then
+!        new = fock_a_tot_3e_bi_orth(a,i)
+!       else if(s1 == 2)then
+!        new = fock_b_tot_3e_bi_orth(a,i)
+!       endif
+       err_ai = dabs(dabs(ref) - dabs(new))
+       if(err_ai .gt. 1d-7) then
+         print*,'s1 = ',s1
+         print*, ' warning on', i, a
+         print*, ref,new,err_ai
+       endif
+       print*, ref,new,err_ai
+       err_tot += err_ai
+ 
+       write(22, *) htilde_ij
+     enddo
+   enddo
+!  enddo
+
+  print *, ' err_tot = ', err_tot
+
+  deallocate(det_i)
+
+end subroutine routine_3
diff --git a/src/tc_scf/fock_tc.irp.f b/src/tc_scf/fock_tc.irp.f
index c3642a7e..2a08e469 100644
--- a/src/tc_scf/fock_tc.irp.f
+++ b/src/tc_scf/fock_tc.irp.f
@@ -89,7 +89,7 @@ BEGIN_PROVIDER [ double precision, Fock_matrix_tc_mo_alpha, (mo_num, mo_num) ]
 
     call ao_to_mo_bi_ortho( Fock_matrix_tc_ao_alpha, size(Fock_matrix_tc_ao_alpha, 1) &
                           , Fock_matrix_tc_mo_alpha, size(Fock_matrix_tc_mo_alpha, 1) )
-    if(three_body_h_tc) then
+    if(three_body_h_tc.and.elec_alpha_num == elec_beta_num) then
       Fock_matrix_tc_mo_alpha += fock_a_tot_3e_bi_orth
     endif
 
@@ -116,7 +116,7 @@ BEGIN_PROVIDER [ double precision, Fock_matrix_tc_mo_beta, (mo_num,mo_num) ]
    call ao_to_mo_bi_ortho( Fock_matrix_tc_ao_beta, size(Fock_matrix_tc_ao_beta, 1) &
                          , Fock_matrix_tc_mo_beta, size(Fock_matrix_tc_mo_beta, 1) )
 
-    if(three_body_h_tc) then
+    if(three_body_h_tc.and.elec_alpha_num == elec_beta_num) then
       Fock_matrix_tc_mo_beta += fock_b_tot_3e_bi_orth
     endif