diff --git a/source/component/plant.py b/source/component/plant.py
index d597971..5676770 100755
--- a/source/component/plant.py
+++ b/source/component/plant.py
@@ -1713,6 +1713,7 @@ class FumeShroom(Plant):
         else:
             self.image.set_alpha(255)
 
+
 class IceFrozenPlot(Plant):
     def __init__(self, x, y):
         Plant.__init__(self, x, y, c.ICE_FROZEN_PLOT, c.INF, None)
diff --git a/source/component/zombie.py b/source/component/zombie.py
index 8bb0172..3c9e3d7 100755
--- a/source/component/zombie.py
+++ b/source/component/zombie.py
@@ -1008,3 +1008,5 @@ class Zomboni(Zombie):
                     x, y = self.map.getMapGridPos(mapX, mapY)
                     self.plant_group.add(self.IceFrozenPlot(x, y))
                     self.map.map[mapY][mapX][c.MAP_PLANT].add(c.ICE_FROZEN_PLOT)
+
+            self.speed = max(0.6, 1.5 - (c.GRID_X_LEN - mapX)*0.225)