diff --git a/KaoExtended/prototypes/morestack.lua b/KaoExtended/prototypes/morestack.lua
index f3988e64..b70c7352 100644
--- a/KaoExtended/prototypes/morestack.lua
+++ b/KaoExtended/prototypes/morestack.lua
@@ -4,7 +4,7 @@
 --	data.raw["item"]["wood"].stack_size = 200
 --end
 if data.raw["item"]["slag"] then
-  data.raw["item"]["slag"].stack_size = 4000
+  data.raw["item"]["slag"].stack_size = 40000
   data.raw["item"]["stone-crushed"].stack_size = 40000
   data.raw["item"]["stone-brick"].stack_size = 4000
   data.raw["item"]["iron-gear-wheel"].stack_size = 2000