diff --git a/code/modules/research/designs/medical_designs.dm b/code/modules/research/designs/medical_designs.dm
index 634eae1d23..26d5d46806 100644
--- a/code/modules/research/designs/medical_designs.dm
+++ b/code/modules/research/designs/medical_designs.dm
@@ -168,7 +168,7 @@
 	id = "genescanner"
 	build_path = /obj/item/sequence_scanner
 	build_type = PROTOLATHE
-	materials = list(MAT_METAL = 1000, MAT_GLASS = 500)
+	materials = list(/datum/material/iron = 1000, /datum/material/glass = 500)
 	category = list("Medical Designs")
 	departmental_flags = DEPARTMENTAL_FLAG_MEDICAL