diff --git a/driver-mct/cime_config/namelist_definition_drv.xml b/driver-mct/cime_config/namelist_definition_drv.xml
index 1c532b25d265..4c3cc2e8d926 100644
--- a/driver-mct/cime_config/namelist_definition_drv.xml
+++ b/driver-mct/cime_config/namelist_definition_drv.xml
@@ -680,6 +680,8 @@
     <values>
       <value cime_model='e3sm'>.false.</value>
       <value cime_model='cesm'>.true.</value>
+      <value cime_model='cesm' atm_grid="T62">.false.</value>
+      <value cime_model='cesm' atm_grid="TL319">.false.</value>
     </values>
   </entry>