diff --git a/src/davidson/davidson_parallel.irp.f b/src/davidson/davidson_parallel.irp.f
index 3fdddad4..9b2dc045 100644
--- a/src/davidson/davidson_parallel.irp.f
+++ b/src/davidson/davidson_parallel.irp.f
@@ -441,7 +441,7 @@ subroutine H_S2_u_0_nstates_zmq(v_0,s_0,u_0,N_st,sze)
     if (imin==1) then
       istep = 2
     else
-      istep = 1
+      istep = 2
     endif
     do ishift=0,istep-1
       write(task(ipos:ipos+50),'(4(I11,1X),1X,1A)') imin, imax, ishift, istep, '|'