diff --git a/src/devices_models/device_constructors/branch_constructor.jl b/src/devices_models/device_constructors/branch_constructor.jl
index 56ca547ae0..ec1b7d6d9d 100644
--- a/src/devices_models/device_constructors/branch_constructor.jl
+++ b/src/devices_models/device_constructors/branch_constructor.jl
@@ -635,6 +635,7 @@ function construct_device!(
         model,
         network_model,
     )
+    add_feedforward_arguments!(container, model, devices)
     return
 end
 
@@ -668,6 +669,7 @@ function construct_device!(
     add_constraints!(container, HVDCPowerBalance, devices, model, network_model)
     add_constraints!(container, HVDCDirection, devices, model, network_model)
     add_constraint_dual!(container, sys, model)
+    add_feedforward_constraints!(container, model, devices)
     return
 end
 
diff --git a/src/devices_models/devices/TwoTerminalDC_branches.jl b/src/devices_models/devices/TwoTerminalDC_branches.jl
index c29df3749f..b5805456d0 100644
--- a/src/devices_models/devices/TwoTerminalDC_branches.jl
+++ b/src/devices_models/devices/TwoTerminalDC_branches.jl
@@ -19,6 +19,11 @@ get_variable_binary(
 
 get_variable_multiplier(::FlowActivePowerVariable, ::Type{<:PSY.TwoTerminalHVDCLine}, _) =
     NaN
+get_parameter_multiplier(
+    ::FixValueParameter,
+    ::PSY.TwoTerminalHVDCLine,
+    ::AbstractTwoTerminalDCLineFormulation,
+) = 1.0
 
 get_variable_multiplier(
     ::FlowActivePowerFromToVariable,