diff --git a/main.f90 b/main.f90
index 103d70d..13c5ac7 100644
--- a/main.f90
+++ b/main.f90
@@ -202,8 +202,6 @@ program x_code
         ! write the restart file if it's the time
         if (mod(itime,IPRINT2).eq.0) then
            call restart_write_parallel
-           !remove hit restart file
-           call system ('rm -f '//run_name//'.64.'//ex_file_ext)
            if (fdm_sw.ne.0) then  ! Reacting
                !call gather_4
                if (myid.eq.master) then
@@ -214,6 +212,8 @@ program x_code
                end if
                call MPI_BARRIER(MPI_COMM_TASK, mpi_err)
            endif
+           !remove HIT3D restart file except the latest
+           call system ('rm -f '//run_name//'.64.'//ex_file_ext)
            ex_file_ext = file_ext
         endif