diff --git a/bld/namelist_files/namelist_defaults_ctsm.xml b/bld/namelist_files/namelist_defaults_ctsm.xml
index cee72ca5cf..838c28da84 100644
--- a/bld/namelist_files/namelist_defaults_ctsm.xml
+++ b/bld/namelist_files/namelist_defaults_ctsm.xml
@@ -540,7 +540,9 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
 <!-- ================================================================== -->
 
 <z0param_method>ZengWang2007</z0param_method>
-<z0param_method phys="clm6_0">Meier2022</z0param_method>
+<!-- <z0param_method phys="clm6_0">Meier2022</z0param_method> -->
+<z0param_method use_fates=".true."  phys="clm6_0" >ZengWang2007</z0param_method>
+<z0param_method use_fates=".false." phys="clm6_0" >Meier2022</z0param_method>
 
 <use_z0m_snowmelt z0param_method="Meier2022" >.true.</use_z0m_snowmelt>
 <use_z0m_snowmelt >.false.</use_z0m_snowmelt>