diff --git a/code/game/objects/items/stacks/stack.dm b/code/game/objects/items/stacks/stack.dm
index 425b7e0b54f..97081779c39 100644
--- a/code/game/objects/items/stacks/stack.dm
+++ b/code/game/objects/items/stacks/stack.dm
@@ -34,6 +34,10 @@
 /obj/item/stack/attack_self(mob/user as mob)
 	list_recipes(user)
 
+/obj/item/stack/sheet/plasteel/cyborg/attack_self(mob/user as mob)
+	user << "<span class='warning'>You lack the subroutines necessary to build more complex structures with that material.</span>"
+	return
+
 /obj/item/stack/proc/list_recipes(mob/user as mob, recipes_sublist)
 	if (!recipes)
 		return
@@ -272,4 +276,4 @@
 	New(title, recipes, req_amount = 1)
 		src.title = title
 		src.recipes = recipes
-		src.req_amount = req_amount
\ No newline at end of file
+		src.req_amount = req_amount
diff --git a/code/modules/mob/living/silicon/robot/robot_modules.dm b/code/modules/mob/living/silicon/robot/robot_modules.dm
index 154d0f88e41..c3c7de3084f 100644
--- a/code/modules/mob/living/silicon/robot/robot_modules.dm
+++ b/code/modules/mob/living/silicon/robot/robot_modules.dm
@@ -172,6 +172,7 @@
 
 	stacktypes = list(
 		/obj/item/stack/sheet/metal = 50,
+		/obj/item/stack/sheet/plasteel/cyborg = 50
 		/obj/item/stack/sheet/glass = 50,
 		/obj/item/stack/sheet/rglass = 50,
 		/obj/item/stack/cable_coil/cyborg = 50,
@@ -467,7 +468,7 @@
 		/obj/item/stack/rods = 30,
 		/obj/item/stack/tile/plasteel = 20,
 		/obj/item/stack/sheet/metal = 50,
-		/obj/item/stack/sheet/plasteel = 50,
+		/obj/item/stack/sheet/plasteel/cyborg = 50,
 		/obj/item/stack/sheet/glass = 50,
 		/obj/item/stack/cable_coil/cyborg = 30
 		)