diff --git a/openfe/protocols/openmm_septop/equil_septop_settings.py b/openfe/protocols/openmm_septop/equil_septop_settings.py
index cce48f29f..e969bded7 100644
--- a/openfe/protocols/openmm_septop/equil_septop_settings.py
+++ b/openfe/protocols/openmm_septop/equil_septop_settings.py
@@ -58,7 +58,9 @@ class ComplexRestraintsSettings(RestraintsSettings):
     class Config:
         arbitrary_types_allowed = True
 
-    k_theta: FloatQuantity['kJ/(mol*rad**2)'] = 83.68 * unit.kilojoule_per_mole / unit.radians ** 2
+    # k_theta: FloatQuantity['kJ/(mol*rad**2)'] = 83.68 * unit.kilojoule_per_mole / unit.radians ** 2
+    k_theta: FloatQuantity[
+        'kJ/(mol*rad**2)'] = 836.8 * unit.kilojoule_per_mole / unit.radians ** 2
 
 
 class LambdaSettings(SettingsBaseModel):
diff --git a/openfe/protocols/openmm_septop/femto_restraints.py b/openfe/protocols/openmm_septop/femto_restraints.py
index 623dc762c..486677fd7 100644
--- a/openfe/protocols/openmm_septop/femto_restraints.py
+++ b/openfe/protocols/openmm_septop/femto_restraints.py
@@ -714,7 +714,7 @@ def create_boresch_restraint(
 
     for key, value in [
         ("k_dist_a", k_distance),
-        ("k_theta_a", k_theta * 2 * 10),
+        ("k_theta_a", k_theta * 2),
         ("k_theta_b", k_theta),
         ("k_phi_a", k_theta),
         ("k_phi_b", k_theta),