diff --git a/day19.py b/day19.py
index 3b3ed73..039f65f 100644
--- a/day19.py
+++ b/day19.py
@@ -38,7 +38,7 @@ class Day(AOCDay):
         start = Coordinate(x, 0)
         last_pos = Coordinate(0, 0)
         last_dir = Coordinate(0, 1)
-        neighbours = maze.getNeighboursOf(start, includeDiagonal=False) + ['None']
+        neighbours = maze.getNeighboursOf(start, includeDiagonal=False) + [Coordinate(0, 0)]
         while len(neighbours) > 1:
             step_count += 1
             if maze.get(start + last_dir):