diff --git a/lignumis/prototypes/content/lumber-mill.lua b/lignumis/prototypes/content/lumber-mill.lua
index 26bb3f7..709bb25 100644
--- a/lignumis/prototypes/content/lumber-mill.lua
+++ b/lignumis/prototypes/content/lumber-mill.lua
@@ -53,7 +53,7 @@ data:extend({
         icons_positioning = {
             { inventory_index = defines.inventory.assembling_machine_modules, shift = { 0, 1.25 } }
         },
-        allowed_effects = { "consumption", "speed", "pollution", "quality" },
+        allowed_effects = { "consumption", "speed", "pollution", "quality", "productivity" },
         crafting_categories = { "wood-processing" },
         crafting_speed = 2,
         energy_source = energy_source,