diff --git a/code/modules/power/lighting.dm b/code/modules/power/lighting.dm
index ec644caff62..b85ecd143a9 100644
--- a/code/modules/power/lighting.dm
+++ b/code/modules/power/lighting.dm
@@ -578,7 +578,7 @@
 	var/status = 0		// LIGHT_OK, LIGHT_BURNED or LIGHT_BROKEN
 	var/base_state
 	var/switchcount = 0	// number of times switched
-	materials = list(MAT_GLASS=100, MAT_METAL=60)
+	materials = list(MAT_GLASS=100)
 	var/rigged = 0		// true if rigged to explode
 	var/brightness = 2 //how much light it gives off
 
diff --git a/code/modules/research/designs/autolathe_designs.dm b/code/modules/research/designs/autolathe_designs.dm
index 5ccea90968e..1768b908766 100644
--- a/code/modules/research/designs/autolathe_designs.dm
+++ b/code/modules/research/designs/autolathe_designs.dm
@@ -499,7 +499,7 @@
 	name = "Light tube"
 	id = "light_tube"
 	build_type = AUTOLATHE
-	materials = list(MAT_METAL = 60, MAT_GLASS = 100)
+	materials = list(MAT_GLASS = 100)
 	build_path = /obj/item/weapon/light/tube
 	category = list("initial", "Construction")
 
@@ -507,7 +507,7 @@
 	name = "Light bulb"
 	id = "light_bulb"
 	build_type = AUTOLATHE
-	materials = list(MAT_METAL = 60, MAT_GLASS = 100)
+	materials = list(MAT_GLASS = 100)
 	build_path = /obj/item/weapon/light/bulb
 	category = list("initial", "Construction")