diff --git a/lib/metas/technology.lua b/lib/metas/technology.lua
index 6b3e0e4..953718f 100644
--- a/lib/metas/technology.lua
+++ b/lib/metas/technology.lua
@@ -11,7 +11,9 @@ local metas = {}
 ---@field public remove_pack fun(self: pYdata.TechnologyPrototype, science_pack_name: data.ItemID): pYdata.TechnologyPrototype, boolean
 ---@field public add_pack fun(self: pYdata.TechnologyPrototype, science_pack_name: data.ItemID): pYdata.TechnologyPrototype, boolean
 ---wraps the given icon with the border taken from the same mod (graphics/technology/border.png)  
----strips any numbers from the end of the mod name
+---strips any numbers from the end of the mod name  
+---scales the icon to the prototype's icon_size or 128  
+---if you want to adjust the icon manually, pass an empty sprite as the path and the icon as the second argument
 ---@field public create_icons fun(self: pYdata.TechnologyPrototype, icon_path: string?, ...: data.IconData): pYdata.TechnologyPrototype
 TECHNOLOGY = setmetatable(data.raw.technology, {
     __call = function(self, technology)
@@ -34,13 +36,15 @@ TECHNOLOGY = setmetatable(data.raw.technology, {
     end
 })
 
-metas.create_icons = function(self, icon_path, ...)
+metas.create_icons = function(self, icon_path,  ...)
+    local icon_size = self.icon_size or 128
     if type(self.icons) == "string" then icon_path = self.icons end
     if not icon_path then error("provide a icon path for " .. self.name) end
     local base_mod = string.gsub(icon_path, "%d*__/.*", "__")
+    log(self.name .. ": " .. icon_size)
     self.icons = {
         {icon = base_mod .. "/graphics/technology/border.png", icon_size = 128},
-        {icon = icon_path, icon_size = 128, scale = 0.8},
+        {icon = icon_path, icon_size = icon_size, scale = 0.7 * 128 / icon_size},
     }
     for _, icon in pairs{...} do
         table.insert(self.icons, icon)