diff --git a/src/cipsi/run_pt2_slave.irp.f b/src/cipsi/run_pt2_slave.irp.f
index b1adfa20..7df98a87 100644
--- a/src/cipsi/run_pt2_slave.irp.f
+++ b/src/cipsi/run_pt2_slave.irp.f
@@ -31,11 +31,12 @@ subroutine run_pt2_slave(thread,iproc,energy)
 
   double precision, intent(in)    :: energy(N_states_diag)
   integer,  intent(in)            :: thread, iproc
-  if (N_det > nproc*(elec_alpha_num * (mo_num-elec_alpha_num))**2) then
-    call run_pt2_slave_large(thread,iproc,energy)
-  else
-    call run_pt2_slave_small(thread,iproc,energy)
-  endif
+  call run_pt2_slave_large(thread,iproc,energy)
+!  if (N_det > nproc*(elec_alpha_num * (mo_num-elec_alpha_num))**2) then
+!    call run_pt2_slave_large(thread,iproc,energy)
+!  else
+!    call run_pt2_slave_small(thread,iproc,energy)
+!  endif
 end
 
 subroutine run_pt2_slave_small(thread,iproc,energy)