diff --git a/cybersyn/scripts/global.lua b/cybersyn/scripts/global.lua
index bb0fdfe..c90b8b7 100644
--- a/cybersyn/scripts/global.lua
+++ b/cybersyn/scripts/global.lua
@@ -34,7 +34,7 @@
 ---@field public accepted_layouts TrainClass
 ---@field public layout_pattern string?
 ---@field public tick_signals {[uint]: Signal}? --transient
----@field public p_count_or_r_threshold_per_item {[string]: int}? --transient
+---@field public p_count_or_r_threshold_per_item {[string]: int} --transient
 
 ---@class Depot
 ---@field public priority int --transient
@@ -75,6 +75,7 @@
 mod_settings = {}
 
 local pairs = pairs
+---@param tab {}
 function table_clear(tab)
 	for k, _ in pairs(tab) do
 		tab[k] = nil
diff --git a/cybersyn/scripts/main.lua b/cybersyn/scripts/main.lua
index 05db3ed..a59f686 100644
--- a/cybersyn/scripts/main.lua
+++ b/cybersyn/scripts/main.lua
@@ -136,6 +136,7 @@ local function on_station_built(map_data, stop, comb1, comb2)
 		--allows_all_trains = param.second_constant == 1,
 		accepted_layouts = {},
 		layout_pattern = nil,
+		p_count_or_r_threshold_per_item = {},
 	}
 	set_station_from_comb_state(station)
 	map_data.stations[stop.unit_number] = station