diff --git a/config/gpu_configs/gpu_hs_rhoe_equilmoist_nz63_0M_55km_rs35km.yml b/config/gpu_configs/gpu_hs_rhoe_equilmoist_nz63_0M_55km_rs35km.yml
index f34e50d7edb..cd51c1c0e7e 100644
--- a/config/gpu_configs/gpu_hs_rhoe_equilmoist_nz63_0M_55km_rs35km.yml
+++ b/config/gpu_configs/gpu_hs_rhoe_equilmoist_nz63_0M_55km_rs35km.yml
@@ -6,7 +6,7 @@ z_elem: 63
 dz_bottom: 30.0
 dz_top: 3000.0
 z_max: 55000.0
-kappa_4: 2.0e16
+kappa_4: 1.0e15
 vert_diff: "true"
 moist: "equil"
 precip_model: "0M"