diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml
index c1654e0ab0..15bd2e1715 100644
--- a/bld/namelist_files/namelist_defaults_cam.xml
+++ b/bld/namelist_files/namelist_defaults_cam.xml
@@ -349,6 +349,7 @@
 <bnd_topo hgrid="ne0np4.ARCTICGRIS.ne30x8" >atm/cam/topo/se/ne30x8_ARCTICGRIS_nc3000_Co060_Fi001_MulG_PF_RR_Nsw042_c200428.nc</bnd_topo>
 
 <bnd_topo hgrid="mpasa480" >atm/cam/topo/mpas_480_nc3000_Co240_Fi001_MulG_PF_Nsw170.nc</bnd_topo>
+<bnd_topo hgrid="mpasa480" analytic_ic="1" phys="cam6" >atm/cam/topo/mpas/mpasa480_gmted2010_modis_bedmachine_nc3000_Laplace0400_noleak_20240507.nc</bnd_topo>
 <bnd_topo hgrid="mpasa480" phys="cam7" >atm/cam/topo/mpas/mpasa480_gmted2010_modis_bedmachine_nc3000_Laplace0400_noleak_20240507.nc</bnd_topo>
 <bnd_topo hgrid="mpasa120" >atm/cam/topo/mpas/mpas_120_nc3000_Co060_Fi001_MulG_PF_Nsw042_c200921.nc</bnd_topo>
 <bnd_topo hgrid="mpasa120" phys="cam7" >atm/cam/topo/mpas/mpasa120_gmted2010_modis_bedmachine_nc3000_Laplace0100_noleak_20240507.nc</bnd_topo>