diff --git a/frc971/control_loops/python/angular_system.py b/frc971/control_loops/python/angular_system.py
index c7e13b8..beade85 100755
--- a/frc971/control_loops/python/angular_system.py
+++ b/frc971/control_loops/python/angular_system.py
@@ -22,7 +22,8 @@
                  kalman_q_voltage,
                  kalman_r_position,
                  radius=None,
-                 dt=0.00505):
+                 dt=0.00505,
+                 delayed_u=0):
         """Constructs an AngularSystemParams object.
 
         Args:
@@ -42,6 +43,7 @@
         self.kalman_r_position = kalman_r_position
         self.radius = radius
         self.dt = dt
+        self.delayed_u = delayed_u
 
 
 class AngularSystem(control_loop.ControlLoop):