diff --git a/bztin2/tin-recipe-updates.lua b/bztin2/tin-recipe-updates.lua
index 891f0ec..b2835be 100644
--- a/bztin2/tin-recipe-updates.lua
+++ b/bztin2/tin-recipe-updates.lua
@@ -183,7 +183,7 @@ end
 
 if mods.bztungsten2 and not mods.bzaluminum2 then
   util.replace_ingredient("small-lamp", "copper-cable", "tinned-cable")
-  util.add_prerequisite("optics", "tinned-cable")
+  util.add_prerequisite("lamp", "tinned-cable")
 end
 
 if mods.bobassembly then