diff --git a/code/modules/research/circuitprinter.dm b/code/modules/research/circuitprinter.dm
index 309cdb7eef1..f3bf0cc0b08 100644
--- a/code/modules/research/circuitprinter.dm
+++ b/code/modules/research/circuitprinter.dm
@@ -10,8 +10,6 @@ using metal and glass, it uses glass and reagents (usually sulfuric acis).
 	icon_state = "circuit_imprinter"
 	container_type = OPENCONTAINER
 
-	var/efficiency_coeff
-
 	var/list/categories = list(
 								"AI Modules",
 								"Computer Boards",
diff --git a/code/modules/research/protolathe.dm b/code/modules/research/protolathe.dm
index 8e85c041708..4ea24ce7e51 100644
--- a/code/modules/research/protolathe.dm
+++ b/code/modules/research/protolathe.dm
@@ -13,8 +13,6 @@ Note: Must be placed west/left of and R&D console to function.
 	icon_state = "protolathe"
 	container_type = OPENCONTAINER
 
-	var/efficiency_coeff
-
 	var/list/categories = list(
 								"Bluespace",
 								"Equipment",
diff --git a/code/modules/research/rdmachines.dm b/code/modules/research/rdmachines.dm
index bd4e5528a9b..4d9b03b38d3 100644
--- a/code/modules/research/rdmachines.dm
+++ b/code/modules/research/rdmachines.dm
@@ -18,6 +18,7 @@
 	var/obj/machinery/computer/rdconsole/linked_console
 	var/obj/item/loaded_item = null
 	var/datum/component/material_container/materials	//Store for hyper speed!
+	var/efficiency_coeff = 1
 
 /obj/machinery/r_n_d/New()
 	materials = AddComponent(/datum/component/material_container, list(MAT_METAL, MAT_GLASS, MAT_SILVER, MAT_GOLD, MAT_DIAMOND, MAT_PLASMA, MAT_URANIUM, MAT_BANANIUM, MAT_TRANQUILLITE, MAT_TITANIUM, MAT_BLUESPACE, MAT_PLASTIC), 0, TRUE, /obj/item/stack, CALLBACK(src, .proc/is_insertion_ready), CALLBACK(src, .proc/AfterMaterialInsert))