diff --git a/ChangeLog.md b/ChangeLog.md
index f0406e63..6f934541 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -35,6 +35,7 @@ Python Kits:
 - Added utility function to determine if it is your team's turn to place a factory or not
 
 Bug Fixes:
+- Lichen water cost costed 1 extra
 - Fix bug where added rubble doesn't remove all lichen underneath
 - Fix bug where move center costs power
 - Fix extra line in stderr logging
diff --git a/luxai2022/factory.py b/luxai2022/factory.py
index d6820518..41dc6f13 100644
--- a/luxai2022/factory.py
+++ b/luxai2022/factory.py
@@ -117,7 +117,7 @@ def cache_water_info(self, board: Board, env_cfg: EnvConfig):
         init_arr = np.stack(deltas) + self.pos.pos
         self.grow_lichen_positions = compute_water_info(init_arr, env_cfg.MIN_LICHEN_TO_SPREAD, board.lichen, board.lichen_strains, self.num_id, forbidden)
     def water_cost(self, config: EnvConfig):
-        return int(np.ceil(len(self.grow_lichen_positions) / config.LICHEN_WATERING_COST_FACTOR) + 1)
+        return int(np.ceil(len(self.grow_lichen_positions) / config.LICHEN_WATERING_COST_FACTOR))
 
     ### Add and sub resource functions copied over from unit.py code, can we consolidate them somewhere?
     def add_resource(self, resource_id, transfer_amount):