diff --git a/robot/conveyor.py b/robot/conveyor.py
index c8ab3f6..bd5696c 100644
--- a/robot/conveyor.py
+++ b/robot/conveyor.py
@@ -113,8 +113,9 @@ class ConveyorBelt:
                     self.boxes.remove(box_id)
                     self.conveyor_stopped = True
                     wall_position = list(pos)
-                    dir_wall = (self.direction + 1) % 3
-                    wall_position[dir_wall] += self.box_size[dir_wall]
+                    dir_wall = (self.direction + 1) % (3 - 1)
+                    wall_position[dir_wall] -= self.box_size[dir_wall] * 0.5
+                    
                     self.call_robot(wall_position, box_id)
                 else:
                     new_pos = list(pos[:])