diff --git a/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/shell_commands b/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/shell_commands
index 84648f9222c6..e82b5ce85ff1 100644
--- a/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/shell_commands
+++ b/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/shell_commands
@@ -1,2 +1,17 @@
 #!/bin/bash
 if [ `./xmlquery --value MACH` == bebop ]; then ./xmlchange --id LND_PIO_TYPENAME --val netcdf; fi
+module load e4s
+spack env activate gcc
+spack load nco
+
+SRCDIR=`./xmlquery SRCROOT --value`
+CASEDIR=`./xmlquery CASEROOT --value`
+FATESDIR=$SRCDIR/src/fates
+FATESPARAMFILE=$CASEDIR/fates_params_hydrograsstempfix.nc
+
+ncgen -o $FATESPARAMFILE $FATESDIR/parameter_files/fates_params_default.cdl
+
+$FATESDIR/tools/modify_fates_paramfile.py --O --fin $FATESPARAMFILE --fout $FATESPARAMFILE --var fates_allom_smode --val 1 --allpfts
+
+spack unload nco
+module unload e4s
diff --git a/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/user_nl_elm b/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/user_nl_elm
index c74b77d05dc6..ea831e5483b9 100644
--- a/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/user_nl_elm
+++ b/components/elm/cime_config/testdefs/testmods_dirs/elm/fateshydro/user_nl_elm
@@ -5,6 +5,7 @@ hist_nhtfrq       = -24
 hist_empty_htapes = .true.
 use_fates_planthydro = .true.
 fates_spitfire_mode = 1
+fates_paramfile = '$CASEROOT/fates_params_hydrograsstempfix.nc'
 hist_fincl1       = 'FATES_ERRH2O_SZPF', 'FATES_TRAN_SZPF',
 'FATES_SAPFLOW_SZPF', 'FATES_ITERH1_SZPF','FATES_ABSROOT_H2O_SZPF',
 'FATES_TRANSROOT_H2O_SZPF','FATES_STEM_H2O_SZPF','FATES_LEAF_H2O_SZPF',