diff --git a/y2018/control_loops/superstructure/superstructure.q b/y2018/control_loops/superstructure/superstructure.q
index 93d5935..166f4d3 100644
--- a/y2018/control_loops/superstructure/superstructure.q
+++ b/y2018/control_loops/superstructure/superstructure.q
@@ -172,6 +172,9 @@
     // Value of the beam breaker sensor. This value is true if the beam is
     // broken, false if the beam isn't broken.
     bool claw_beambreak_triggered;
+    // Value of the beambreak sensor detecting when the box has hit the frame
+    // cutout.
+    bool box_back_beambreak_triggered;
   };
 
   message Output {