diff --git a/code/game/mecha/mecha_construction.dm b/code/game/mecha/mecha_construction.dm
index 56c295a35f6..b8b5df3916b 100644
--- a/code/game/mecha/mecha_construction.dm
+++ b/code/game/mecha/mecha_construction.dm
@@ -121,7 +121,7 @@
 /obj/item/mecha_parts/part/gygax_armour
 	name="Gygax Armour Plates"
 	icon_state = "gygax_armour"
-	origin_tech = "materials=5,combat=4"
+	origin_tech = "materials=5;combat=4"
 	construction_time = 600
 	construction_cost = list("metal"=75000,"diamond"=10000)