diff --git a/src/somd2/config/_config.py b/src/somd2/config/_config.py
index 7dd80b9..beebe2c 100644
--- a/src/somd2/config/_config.py
+++ b/src/somd2/config/_config.py
@@ -98,7 +98,7 @@ def __init__(
         charge_scale_factor=0.2,
         swap_end_states=False,
         coulomb_power=1.0,
-        shift_delta="10A",
+        shift_delta="1A",
         restraints=None,
         constraint="h_bonds",
         perturbable_constraint="h_bonds_not_heavy_perturbed",