diff --git a/reg_tests/cpld_gridgen/rt.sh b/reg_tests/cpld_gridgen/rt.sh
index 5903ed03d..3844ae757 100755
--- a/reg_tests/cpld_gridgen/rt.sh
+++ b/reg_tests/cpld_gridgen/rt.sh
@@ -108,7 +108,7 @@ TESTS_FILE="$PATHRT/rt.conf"
 export TEST_NAME=
 
 # for C3072 on hera, use WLCLK=60 and MEM="--exclusive"
-WLCLK_dflt=35
+WLCLK_dflt=50
 export WLCLK=$WLCLK_dflt
 MEM_dflt="--mem=16g"
 export MEM=$MEM_dflt