diff --git a/parm/land/letkfoi/apply_incr_nml.j2 b/parm/land/letkfoi/apply_incr_nml.j2
index 2dac08157..39765a5d3 100644
--- a/parm/land/letkfoi/apply_incr_nml.j2
+++ b/parm/land/letkfoi/apply_incr_nml.j2
@@ -2,7 +2,7 @@
   date_str = "{{ current_cycle | to_YMD }}",
   hour_str = "{{ current_cycle | strftime('%H') }}",
   res = {{ CASE[1:] }},
-  frac_grid = {{ FRAC_GRID | to_f90bool }},
+  frac_grid = .true.,
   rst_path = "{{ DATA }}/anl",
   inc_path = "{{ DATA }}/anl",
   orog_path = "{{ HOMEgfs }}/fix/orog/{{ CASE }}",