diff --git a/src/ip_grid_mod.F90 b/src/ip_grid_mod.F90
index fd1a1d04..36ccdc3f 100644
--- a/src/ip_grid_mod.F90
+++ b/src/ip_grid_mod.F90
@@ -176,8 +176,6 @@ end subroutine init_grib2_interface
 contains
 
   subroutine use_ncep_post_arakawa() bind(c)
-    !
-    USE ISO_C_BINDING, ONLY: C_BOOL
     ncep_post_arakawa = .true.
   end subroutine use_ncep_post_arakawa