diff --git a/tests/tests/cpld_control_gefs b/tests/tests/cpld_control_gefs
index fe646c8db1..5890530b3a 100644
--- a/tests/tests/cpld_control_gefs
+++ b/tests/tests/cpld_control_gefs
@@ -121,7 +121,7 @@ export MESH_WAV=mesh.${WW3_DOMAIN}.nc
 export WW3_MODDEF=mod_def.${WW3_DOMAIN}
 
 # set component and coupling timesteps
-#export DT_ATMOS=300
+export DT_ATMOS=300
 export DT_INNER=${DT_ATMOS}
 export DT_CICE=${DT_ATMOS}
 export DT_DYNAM_MOM6=900