diff --git a/main.f90 b/main.f90
index 82847e4..c335328 100644
--- a/main.f90
+++ b/main.f90
@@ -253,7 +253,7 @@ program x_code
            if (task_split) call fields_to_stats
            if (mod(itime,iprint1).eq.0) call stat_main
            if (fdm_sw.eq.0) then  ! non-reacting
-              if (mod(itime,iwrite4).eq.0) call io_write_4
+              if (mod(itime,iprint2).eq.0) call io_write_4
            endif
         end if
      end if stats